US2241991A - Furring mounting for metal lath - Google Patents

Description

y 1941- w. M. GOLDSMITH 2,241,991

FURRING MOUNTING FOR METAL LATH Filed Jan. 23, 1939 INVENTOR MHZ/am fifo/dswzif/z Ada/ AT 1- Y Patented May 13, 1941 FAT 3 Claims.

This invention relates to attachment of furring bars or members, preparatory to attachment of metal lath and the like thereto.

An object of the invention is to provide structural parts or elements that are simple in construction and form and which arereadily and easily attached and applied both as concerns the supporting structure and the furring members.

Another object is to provide means for accomplishing the stated objectives, for attachment of which no special tools are required, an ordinary hammer being all that is necessary.

These and other objects are attained by the means described herein and disclosed in the accompanying drawing, in which:

Fig. 1 is a fragmental perspective view of a support member having attached thereto furring and mounting means therefor, and embodying two variations of the instant invention.

Fig. 2 is an enlarged detail view of a chair and attachment means associated therewith, all forming details of the invention.

Fig. 3 is an end View of parts shown in Fig. 2.

Fig. 4 is an enlarged perspective view of a modified form of chair and attachment means, and embodying the invention.

Fig. 5 shows a modified form or arrangement of parts shown in Fig. 2.

The support member i0 is illustrative of any support element to which furring and lath is to be secured. Such elements may be disposed in horizontal positions at the upper and lower limits of a room to be lathed and plastered, or they may be vertical studding or similar members.

The invention is specifically shown herein in conjunction with the representation of a horizontal support member intended to be disposed adjacent the upper room limit because certain features of the invention lend themselves particularly to meeting certain problems there encountered and solved by the instant invention.

The chair I I shown in Fig. 1 embodies the preferred form of the invention. It is to be understood that a plurality of such chairs are to be provided for attaching or mounting the furring bars I2 upon the supporting structure such as l G, preparatory to attachment of lath to the furring.

The chair I i comprises a flat metallic body It from the one edge of which extend the feet or lugs I4 and I5. The end of the chair carrying the lugs or feet may be termed the base of the chair. The lugs extend in opposite directions and are readily formed from the body t3 by providing a slit in the base portion thereof, for separating the lug forming portions thereof, and then turning the lugs in opposite directions for approximately ninety degrees from their original positions. Thus the lugs are substantially aligned or coplanar and are substantially perpendicular to the body it of the chair. The upper edge I 6 of the body is preferably notched or recessed as shown to provide a pocket I'E for the reception of a furring bar or member such as [2. The pocket depth may be varied to suit any particular requirements that may develop. The body has formed from it, a laterally projecting pocket or seat 13 for the frictional reception of the shank E9 of a fastening means or member such as the hall 23. The seat or pocket may be formed by slitting the body as indicated at 21 and 2'2 and giving to the material 23 intermediate such slits 2i and 22, an outwardly and arcuately shaped form. Thus the shank of a nail, when introduced into the pocket or seat it, so as to project beyond both the upper and lower edges of the pocket, contacts the same side wall or face 26 of the chair on opposite sides of the pocket. Preferably the material of the nail seat is extended to such degree that some slight-degree of force is necessary to project the nail shank through the seat, thus frictionally holding the nail against unintentional movement thereof relative to the chair. Such frictional engagement should not prevent the movement of the nail relative to the chair, under the impulse of a normal hammer blow intended to drive the nail point into such surface as the chair is to be mounted upon.

The nail head 25 is preferably elongated so that the nail shank may be disposed relatively closer to the side edge 26 of the chair, than to the opposite edge 2?. The pocket I! in the upper edge It of the chair is preferably closer to the said opposite edge 2i than to side edge 26. Thus, the elongated nail head 25 may extend over the pocket H and may retain and hold a furring bar in the pocket or in contact upon the bottom wall 2d of said pocket ll.

By reference to Fig. 1, it will be observed that by reason of the related structure, it is possible to dispose the nail it at sufficient distance from the edge or corner 28 of the support W to effect substantial attachment of the chair on the support i8, yet the furring bar is securely held and.

positioned close to the said edge or corner 29 of the support so as to facilitate mounting or attachment of lath upon the furring bar. It will also be observed that the load or weight transmitted to the iurring bar, by reason of the lath and plaster subsequently applied, does not exert a force or pull operating in the direction of. the

length of the nail shank. Instead, such force or weight resolves itself into factors one of which is directed against what might be termed the leading edge or corner 30 of the chair, resisted by the support I0, and another of which factors exerts an arcuate force or tendency upon the nail as distinguished from a straight pull on the nail in the direction of the length of the nail shank. Thus the material of the nail becomes a factor in preventing dislodging of the applied nail and chair, as distinguished from arrangements wherein the frictional grip of the support I upon the pointed nail end is relied on for retaining the nail, chair, furring, lath and plaster in firm attachment to and upon the support member such as III.

In some installations, the leverage factors, availed of in the preferred form of chair as shown in Fig. 2, may be such as will permit the use of .a nail such as I9, provided with a conventional round head, of a diameter sufficient to extend over the pocket I'I. When using such nails, it may be found expedient to locate the nail seat or pocket I8 closer to the furring seat or pocket I'I, so that the nail head will extend over the furring bar and seat therefor, to assure retention of the bar in the seat when the nail has been driven home.

In connection with the mentioned factors for assuring secure .mounting on the support Iii, it should be observed that the extended lower faces 3! and 32 of the lugs or feet It and I5 respectively, especially said face 32, provide an extended contact for the leading edge or corner 30 of the chair upon the support III, thus precluding the weight imposed on the chair from' cutting or pressing the leading edge or corner of the chair into the substance of the support III in such instances where such support may be of fibrous or cellular character such as wood,-

etc.

The chair 4d embodies generally the features and advantages of the chair II. A nail such as I9 may be used with the chair ii), although the conventional nail II is shown. The opening M in chair MI may be of such sizerelative to the shank 43 of nail II, as to assure frictional retention of the nail by the chair until the nail is driven home so as to position the head 44 thereof partly over the pocket 55 provided as a seat for a furring bar or element. In this form of device, it will be observed, there is also attained, similar operation of forces whereby to avoid direction of pull upon the nail shank in the direction of the length of the shank thereof. Also, the spaced leading edges 46 and d1 of the chair give substantial support to the leading edge or end of the chair. The chair may be fabricat ed of sheet metal, having such characteristics of strength and resiliency as may be found desirable in View of the particular use to which same may be put.

Fig. 5 shows a conventional round headed nail, such as I I, used in conjunction with a chair such as H.

The chair til may be said to be of inverted U-shape or channel iron shape in cross section, the web thereof having the bar and nail receiving pockets formed therein. Thus the free ends of the legs or arms of the channel iron chair may be said to be divergent in the sense and for the same purposes as are the lugs or feet of chair II divergent. Also, the nail receiving pocket may be said to be offset relative to the bar receiving pocket as is the nail receiving pocket I8 offset relative to pocket I! in chair II. Thus the leading or pointed end of the nail is necessarily disposed in spaced relation, longitudinally of the chairs, when a nail is assembled with a chair and as the pointed end of the nail is driven into a supporting surface, the point of fixation of the chair to a supporting surface is necessarily laterally or longitudinally disposed relative to the point or place of fixation of a furring bar to the chair.

While a single furring bar is shown in the drawing, it is to be understood that the average installation comprises a plurality of mounted furring bars, upon which the lath is mounted. Also, an indefinite number of chairs ar used for mounting each of the furring bars. Ordinarily identical chairs would be used on a given job, as distinguished from the showing in Fig. 1 hereof, of specifically different chairs for supporting the same furring bar.

The edge or corner 29 of the support may be termed a leading edge of the support since it approximates the limit of the lath and subsequently applied plaster wall. In those instances where the furring bar shown in Fig. 1 is one of a number of similar furring members disposed over an extended .ceiling area, the lath would ordinarily be wired to the furring bars although spaced a slight distance beneath the furring bars.

Such spacing or distance would be dependent upon the positions of the furring abov the lower edges of the joists or supports I0. Consequently it is desired to dispose the furring as close as possible to the horizontal plane in which the leading edge or corner of the support Ill is disposed. The use of the chair structures shown herein permit the closest approach to positioning of such furring in the indicated plane, yet disposing the holding means, such as the nails, suficiently remote or upwardly beyond the furring bar and the lower face or leading edge of the support I'll, as will provide substantial anchoringof the chair and furring on the supapplied, the furring bars may be so disposed relative to the leading edges of the supports such as It, that the lower edges-of the furring bars are substantially aligned with the lower faces of the joists or supports II), the spaced relationship between the lath and furring, mentioned in the preceding paragraph being obviated and the lath is held in contact with or upon the joists and the furring.

In other instances it may be found desirable to mount the chairs upon the under faces of the joists or supports II] as distinguished from attachment thereof to the side Walls or faces of such supports.

I claim:

1. In a device of the class described the combination of a chair member having a top edge and a nail shank receiving pocket so related to said top edge that a headed nail having its shank extended through the pocket will dispose the head of the nail upon or immediately over and adjacent said top edge of the chair, said chair having a rod or furring receiving pocket formed in its top edge at a place remote from any nail shank associated with said nail shank receiving pocket, said second mentioned pocket being disposed intermediate the lateral edges of the top edge of the chair member and spaced by a portion of said chair top edge from any nail shank associated with the chair, and a nail having an elongated head extending laterally from its shank and adapted to have the free end of said elongated nail head extending beyond the portion of the top edge of the chair spacing the pocket in said top edge from the nail shank and projecting over said pocket for securing a furring bar or the like in said last referred to pocket.

2. In a device of the class described the combination of an elongated chair member having a top edge and a pair of lateral or side edges, said top edge, adjacent one of and intermediate said lateral edges having a rod or furring receiving pocket formed therein, said member having formed therein, adjacent its other lateral side edge, a nail shank receiving pocket, a substantial portion of the top edge of the chair being disposed between the first mentioned pocket and the shank of any nail received in said nail shank receiving pocket, and a nail comprising an elongated head and a shank, the shank being received in said nail shank receiving pocket and the elongated head being adapted to extend over said first mentioned pocket for closing said pocket.

3. In building construction the combination of a support member having a leading edge, an elongated chair member having a top edge and lateral or side edges spaced by said top edge, said chair member having one of its lateral edges disposed at the leading edge of the support member, the remainder of said chair extending away from said leading edge of the support member whereby to dispose the other lateral edge of the chair at a position remote from the leading edge of said support member, said chair having a rod or furring receiving pocket in its top edge intermediate the lateral edges thereof and adjacent the leading edge of the support member and spaced by an intermediate portion of said top edge from said remote lateral edge of the chair, a furring bar received in said pocket and extending in substantial parallelism with said leading edge of the support member and fastening means at the remote portion of the chair for mounting the chair on the supporting member and comprising an elongated portion extending over the intermediate portion of the top edge and forming a closure for retaining the furring bar in the pocket.

. WILLIAM M. GOLDSMITH.

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