US2508968A - Manufacture of felted material - Google Patents

Description

y 1950 c. P. DE M. PORRITT 2,508,968

MANUFACTURE OF FELTED MATERIAL Filed Nov. 29, 1946 2 Sheets-Sheet l @QW (94, (a INV NTO R. W 0 BY Wei AGENT May 23, 1950 Filed Nov. 29, 1946 C. P. DE M. PORRITT MANUFACTURE OF FELTED MATERIAL 2 Sheets-Sheet 2 PatenteclMay 23, 1 950 Cy-riI Philip fle 'Musehamp,loi tittfRoehdalefEng- 3 -:land, assignorato-R. R; Whitehead-i8; Brothe'rs -.-B it; shicomr ny Oldham, England, a

.apnncetmnimvember 29, iase'tsefrielyIshmael! increment -member 2 ,112.4 as ectiond itubliclawj690,rAugnst:8,:lsIl6 gamut-excites toher;;25,:;ldi5

' The present invention .-re lates .to improvements or roups of rollers as the case,may be, ora plate andgroupoimollers, the plates .or the two groups of rollers being "oscillated in .their own planes simultaneously in opposite directions.

the unfelted laps or batts are constrained between two plates, one of which is oscillated or otherwise displaced in its own plane, whilst the other remains stationary. In a, further known hardening process, the unfelted laps or batts are passed between a series of nip rolls, the rollers on one side rotating about their axes, whilst at the same time oscillating axially, whilst the other group of rollers on the opposite side of the lap or batt rotate about stationary axes.

In these latter two cases, that side of the felt in contact with the movable element will receive the maximum amount of fibre disturbance which becomes progressively reduced towards the other side.

According to the present invention one or more laps or batts of fibre to be hardened are constrained between elements on opposite sides, each of said element being movable, but at any one moment of time, one element will be stationary whilst the other will be moving. By this means a uniform fibre disturbance is obtained throughout the thickness of the lap or batt.

The invention is further described with reference to the accompanying diagrammatic drawings, in which:

Fig. 1 is a diagram of one known form of hardening machine,

Fig. 2 is a diagram of another known form of hardening machine,

Fig. 3 is a diagram showing the method of hardening of felt according to thi invention,

, Fig. 4 is a side elevation of a machine operating according to this invention,

Fig. 5 is a corresponding plan view,

- Fig; 6is adiagrammaticview "showing another form-of d v c I i lln h tlm we met d.illl i t dad as amm fie l i r a a wa ite tle 9 1;- strained between two plates'I, ,g...or, ,gi;oups oi roll.-

e as he casamay-be .ora ,p1ataand a group o l'rol ers."' plate-51,2 r thewo=-,e 'onips -o i bll tsib in s illa' din tan ollslviinpppos te I will be seen "thaflfibrieldisplaeement .w l--be -zer.o

willgof necessitylbasoit, and'il'oose. along its centre. In'theia ran ementgoiinigure 2 whereitheltcp bla el alone i oscillated .or.6therw.ise'..d $l a in its .owll'illanewhilst",the emergent-e T4 '('or up f r llers) i' ationary; one S de ef th el wil beha 'ened..bu lth ffeltwinfb o sliv -is e owand the other si e which ob'v r bu lyremainsmitsbriginalicmiqition. I

In "thearr'angement of the present invention, however, shown diagrammatically in Figure 3 where one plate 5 (or group of rollers) is moving whilst the other plate 6 (or group of rollers) is stationary, and then the plate 5 is stationary whilst the plate 6 is moving, then it will be readily appreciated that the fibre movement will be uniform throughout the lap or batt in that whilst the outer surface of the lap is moving twice the distance of the fibre in the median plane, the fibre lying in the median plane is operated upon for twice the time.

In the machine shown in Figures 4 and 5 soft laps or batts of fibre or felt to be hardened on storage rolls 1, 8 may be held in supports 9, II) respectively, and fed between top and bottom carrying cloths I I, I2 to be passed thereby either step by step or continuously and slowly between the pair of plates l3, l4. Instead of a pair of plates I3 and I4, either the top plate I 3 or the bottom plate I4 or both may be in the form of a set of rolls held in a frame. The plate l3 or the ,top group of rollers as the case may be, is adapted to be oscillated in its own plane, whilst the bottom plate I4 or group of rollers, as the case may be, is stationary and vice versa. This may be effected by means of cams, l5, [6, disposed at the four corners of the plate (as shown in Fig. 5), mounted on intermittently driven shafts I1, I8, respectively, which shafts may be independently driven or geared together in groups, so that the top plate or group of rollers I5 is moving when the bottom plate or group of rollers I6 is stationary and vice versa. In the embodiment shown in Figure 5, driving arrangeplace the bottom plate in its own plane while the top plane I3 is stationary, and vice versa. In a alternately displacing each plate in its own plane in opposite directions at times only when the other plate is stationary.

3. A machine for hardening laps of fibrous material consisting in combination of a pair of constraining elements spaced in parallel planes,

simple form, of course, the cams IS, It may be mounted on the same driving shaft, but one set i of cams 15. may be disposed out of phase with the other set of cams l6. A

Another arrangement purely by way of example is shown diagrammatically in Eig. B where s rotating shaft is has a pair of crank pins 20, 2|

connected respectively to connecting rods 22, 23'

connected to slide links 24, 25, respectively, which have lost motion connection, being conveniently and means to displace one constraining element in its own plane whilst the other constraining element is stationary, and vice versa.

4. A machine for hardening laps of fibrous material consisting in combination of a pair of plates spaced in parallel planes, and means to displace one plate in its own plane whilst the other plate is stationary, and vice versa.

in the form of stops such as 28. 29 and stops 30,

3|, on the slide links 24, 25 respectively, engaging stops 32, 33, respectively, connected to the plates 26, 21.

It will be noticed that in each case the top plate or set of rollers as the case may be is moving whilst the bottom plate or set of rollers is at rest and vice versa.

It has been found that by this means an im--' proved felting is obtainable, both as regards effect on the finished felt and as regards time and energy spent in this process, and in the subsequent milling or felting processes.

I declare that what I claim is:

1. A method of hardening fibrous material consisting in constraining a number of laps offib're between a pair of elements in parallel planes and alternately displacing each element in its own plane in opposite directions at times only when the other element is stationary.

2. A method of hardening fibrous material consisting in constraining a number of laps of fibre between a pair of plates in parallel planes and 5. A machine for hardening laps of fibrous material consisting in combination of a pair of constraining elements spaced in parallel planes to constrain fibrous material between them, conveyor 'means to displace said fibrous material progressively between the said constraining elements, and means to displace one constraining element in its own plane whilst the'other constraining element is stationary, and vice versa.

CYRlL PHILIP DE MUSCHAMP PORRITT.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 124,828 Ladd Mar. 19, 1872 470,496 Le Grand Mar. 8, i892 FOREIGN PATENTS Number Country Date 58,794 Germany Feb. 14, 1891 268,847 Great Britain Apr. 14, 1927 419,230 Germany Sept. 24, 1925

Claims (1)

1. A METHOD OF HARDENING FIBROUS MATERIAL CONSISTING IN CONSTRAINING A NUMBER OF LAPS OF FIBRE BETWEEN A PAIR OF ELEMENTS IN PARALLEL PLANES AND ALTERNATELY DISPLACING EACH ELEMENT IN ITS OWN PLANE IN OPPOSITE DIRECTIONS AT TIMES ONLY WHEN THE OTHER ELEMENT IS STATIONARY.

Images