US1738822A - Clamping device - Google Patents

Description

Dec. 10, 1929. E. A. ODIN CLAMPING DEVICE Filed Jan. 51, 1927 I N VEN TOR. 152/ 6/76 rv. 000/1 A TTORN E Y.

Patented 10, 1929 i i PTENT EUGENE A. onnv, on crIIoeGo, ILLINOIS cLAMrrno nnvrcn Application filed January 31, 1927. Serial a... 164,690.

This invention relates to clamping devices, 011 the bar or rod 10 and holding it where it and it has for its object providing a clampis moved. The jaw 16 may be slid along the ing device which may be quickly and conrod 10 towards the jaw 17 without hindrance. veniently opened and closed, and a special ob- But an element 21, which for convenience I ject is to provide means for opening the clamp call a trigger, norm-ally prevents movement a very material distance without the necesof the jaw 16 away from the jaw 17. The sity of operating screws or other similar detrigger or cramping member 21 has an openvices. ing 22 through which the rod or bar This application is a continuation in part passes, and, as the opening is but slightly 1a of my co-pending patent application Serial larger than the rod 10, any tilting of the 5 No. 133,881, filed September 7, 1926. trigger or cramping member on the rod or Of the accompanying drawings Fig. 1 is bar will bind it thereon and prevent relaan elevation, partly in section, of a clamping tive movement of the two elements. As a condevice in the nature of a vise which embodies sequence, when the pressure is brought to the features of my invention; Fig. 2 is a bear on the jaw 16, this jaw, by means of sectional view of the same along the line 2-2 the lug 23, pushes the upper end of the trigof Fig. 1; Fig. 3 is an elevation of a modified ger or cramping member so as to bind it on form of the clamping device; Fig. 4: is a secthe rod or bar 10 and prevent rearward tional view along the line 4-4 of Fig. 3; movement of the jaw. The upper end of the and Fig. 5 is a fractional view of Fig. 3 with trigger plays freely in a slot 25 in the lug 23 the parts shown rotated through 90. and hence may be tilted with reference to In general my invention comprises a rod the jaw 16 but cannot be moved materially or bar 10 which may be used either to suphorizontally with reference to the jaw. A port the clamping device or it may be supbolt 2 1 prevents rotary movement of the trig- 25 ported by the clamping device. In this inger around the rod or bar 10 and also prestance ll show the rod supported on a bench vents movement of the lower end away from 11 by means of any suitable supporting the jaw 16, so as to bind the trigger or crampmeans such as the clamp 12. This clamp coming member on the rod or bar when the jaw prises an ordinary split collar 13, the lips of is moving towards the jaw 17. This bolt 30 which may be pressed together by means of connected with the jaw and cramping memthe screw 14, the collar being supported on her or trigger as shown constitutes connecthe bench by means of a bracket 15. My tions between them permitting the cramping clamping device in this instance is supported member to bind upon attempted relative at the outer end of the rod or bar 10 and movement of the bar and members in one di- 35 comprises jaws 16 and 17 which are both rection while preventing its binding during slid-ably mounted upon the shaft 10 but which the relative movements in the other direcare kept from rotation thereon by means of tien. Its head also constitutes an abutment keys 18 fixed to the respective jaws and playlimiting the swinging movement of the ing in the keyway 19 of the shaft. The jaw cramping member in one direction.

17 may be moved with reference to the rod 10 It will thus be seen that the jaw 16 is free to by rotating the screw 20, thus forcing the move forwardly or towards the jaw 17 withj aw towards or away from the jaw 16. This out any hindrance by the trigger or crampscrew 20.. co-operating as seen with the jaw ing member, but any effort to move the jaw 17 and the bar or rod 10 constitutes means 16rearwardly will be overcome by the tilting for giving said jaw 17 a limited movement tendency of the trigger 21 and the binding thereof on the rod or bar and the greater the force against the jaw 16 the greater the 7 binding tendency. In order to insure the binding of the trigger or cramping member on the rod or bar the operator may pull the lower end of the trigger 21 forward slightly;

or a spring 26 may be used to hold the lower end of the trigger normally in its binding position. WVhen the spring is used the operator, to move the jaw 16 rearwardly, may press the trigger out against the head of the bolt 24 and when in its proper position, if

the trigger is released, the jaw will instantly .wardl'y and the screw will force the two jaws 7 to ether as firmly as may be desired.

in case of the device of Fig. 3 the jaws 31 and 32 are arranged to clamp such articles as may be desired in somewhat the same way as the jaws 16 and 17. In this instance, however, Isubstitute for the trigger 21 a casing 33' enclosing a plurality of disks 34 which likewise form a cramping member, as hereinaftetf explained. The chamber 35 of the casing is deep enough to allow free relative movement ofthe disks, at the same time holding them fairly snugly together.

openings 36 in the disks are somewhat larger And the than the rod 37 u on which the jaws and the disks ar 'mounted. so that when the casing 33'is tilted slightly with reference to the bar the disks will bind on the bar, as in case of the trigger 21. The casing is limited in its movement away from the jaw 31 in any suitable manner, such as b means of fingers 38 "fixed to the jaw and iaving flanges 39 extending overthe casing33. The movement of oneside of the casing towards the jaw is limited by a boss 40, or in any other suitable manner. At' the same time the casing is free to tilt more or less on the bar and with reference to the jaw. A spring etl at all timestends to pull the side 0 the casing opposite the boss towards the jaw, the spring being fixed to the jaw and to the arm 42 which is fixed to the casing.

. t will thus be seen that, when the jaw 31 is pulled towards the jaw 32 it will move freely, as the casing 33 will not be tilted. But the disks in the casing will prement movement ofthe jaw 31away from the jaw 32 unless the casing is held from tilting by ushing the arm 42 away from the I hen the casing is tilted by the spring,'as each disk will be tilted and will bind on the bar, there will be less tendency for the jaws to be forced apart than would be the case with a single disk or with the'single trigger or cramping member 21. While, ordinarily, the single trigger or disk would be ample, yet it sometimes happens in the use of the device that there is a pounding or jarring effect that may cause the jaws to open slightly if barked by only a single disk or trigger. But with a number of disks, as indicated in Fig. 3, this tendency will be substantially eliminated.

In this modified vise I show detachable jaws l5 so that they may be removed and jaws of other shapes inserted when desired. To facilitate removal the jaws have shanks 16 which enter openings l7 in the projection 48 of the hub 49 of the jaw. The flattened surfaces at 50 prevent rotation of these jaws when in place. And to prevent the aws falling out inadvertently I form a groove 51 in the shank and a pin or a ball 52 is adapted to be forced, by a spring 53, into this groove when the aw is in place.

I claim as my invention 1. In a device of the class described, the combination with a bar, of a jaw adapted per se to move freely relatively thereto, a tilting cramping member carried by the jaw and through which the bar extends and adapted automatically to be cramped on the bar to prevent relative movement of the jaw in one direction while permitting it in the other, means carried by the jaw and eo-operating with the cramping member to limit its tilting movement when the aw is moved in the permissible direction, a second jaw having a limited movement on the bar toward and from the first jaw, and means for giving said second jaw said limited movement and holding it where it is moved.

2. In a device of the class described, the combination with a bar, of a jaw adapted per se to move freely relatively thereto, a tilting cramping member carried by the jaw and adapted automatically to be cramped on the bar to prevent relative movement of the j aw in one direction while permitting it in the other, means carried by the jaw and co-operative with the cramping member to limit its tilting movement when the jaw is moved in the permissible direction, a second jaw having a limited movement on the bar toward and from the first jaw, and means for giving said second jaw said limited movement and holding it'where it is moved, said means consist ing of a screw mounted to turn in said second jaw and threaded into the bar.

3. A clamping device comprising a rod, a first and second jaw slidably mounted on said rod, means for forcibly moving said first jaw toward the other, and means for preventing the movement of the second jaw away from said first jaw, said latter means com nising a plate having an opening thcrethrough, said rod passing through said opening normally at right angles thereto, said plate being pivoted at one end to its associated jaw, the other end of the plate being free to move toward the associated jaw to an oblique angle with said rod, and means preventing movement of said other end away from said associated jaw beyond the normal position at right angles to said rod.

4. A clamping device as claimed in claim 3, and means for preventing rotation of either of said jaws on said rod.

5. A clamping device as claimed in claim 3, and resilient means tending to force said other end toward said associated jaw.

In testimony whereof, I hereunto set my hand.

EUGENE A. ODIN.

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