US828113A - Woodworker's clamp. - Google Patents

Description

\N-" 828,113. PATENTED AUG. '7, 1906 J'. E. HILLBBRANDT. WOODWORKERS CLAMP. APPLICATION FILED AMAR. 5, 1906.

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JoHAN EMIL HILLEBRANDT, oF BUFFALO, Naw Yoan.

' WQGDWORKERS CLAMP.. y

v No. 828,113.

Specication of Letters Patent.

Patented Aug. ,7, 1906.

Application filed March 5, 1906.` Serial No. 304,403-

'Be it known that I, JOHAN' EMIL HILLE- BRAND'F, a subject of the King of Denmark, and a resident of Bualo, the county of Erie, and State of New York, have invented a new and Improved Woodworkers Clamp of Which-the following isa full, clear, and exact description.

The object of the invention is to provide a vnew and improved clamp more especially designed for the use of carpenters, cabinetmakers, piano-makers, and other woodworkers and arranged to permit quick and convenient adjustment of a movable jaw rel-` ative to a iixed jaw and toseourely clamp pieces of wood to be glued together or other Y .objects between the jaws..

The invention consists of novel features and parts and combinations oi the same, which will be more fully described hereinafter and then pointed out in the claims.

A practical embodiment of the invention is represented in the accompanying drawings,

vforming a part of this specification, in which similar characters of reference indicate corresponding parts in all the views.

Figure 1 is a side elevation of the improvement, showing the parts in positionior adv justing the movable jaw. Fig. 2 is a like view of the same, showing the movable jaw in section and in clamping position; and Fig. 3 is a sectionalplan view of the improvement on the line 3 3 of Fig. 2.

The shank A of the clamp is provided at one end with an integral jaw B, operating, in conjunction with a movable jaw C, for clamping pieces of wood to be glued together or other objects securely in place. The movable jaw C is provided with a box-like structure C,

through the opening C2 of which extends' loosely the shank A to permit of sliding the box-like structure C', and consequentlythe jaw C, up or down on the shank A to bring the movable j awv C in close proximity to one side of the object to be clamped between the jaws B and C.

In thebox-like structure C is pivotedat I D a pawl D, pressed on by a spring E and rovided at its inner face with ratchet-teeth D2, adapted to mesh with ratchet-teeth A", formed on the inner edge of the shank A. The free end of the pawl D is provided with a suitable handle D3 to enable the o erator to conveniently disengage the teet D2 from the teeth A whenever it is desired to inove the movable jaw C up or down on the shank A.-

A, as pla` y in `cated in Fig. l, to bring the outermost tooth of the' teeth D2 into engagement with one of the teeth A to allow the pawl D to swing on this outermost tooth as a ulcrum and at the time the jaw C is moved sidewise and swings on the Julcrum D yof the pawl D. v

Cn the box-like structure C is arranged a transverse pivot F, on which is mounted to turn a cam-lever G, adapted to. engage the back A2 of the shank A, and the said cam-lever G is provided with a handle G', adapted to be taken hold of by the operator to turn the cam-lever G with. a view to swing the jaw C sidewise, and with it the pawl D, as above explained, to cause the jaw C to move toward the jaw B, and thus securely' clamp the object between the two jaws B and C. The box-like structure C is provided on its outer side with a stop C", spaced a distance from the projection C3 to exceed the width of the shank A, so that when the'several parts are in the position as, illustrated in dotted lines in Fig. 1 then the stop Crests against the back A2 and the pawl D is completely free ofthe teeth-A to allow convenient up and down sliding of the movable jaw C on the shank A. Now when the several parts are in this dotted position and an object is abuttedwith one end against the jaw B then the other jaw C 'is moved up on the shank A by the operator until the jaw C engages or is in close proximity to the other side of the object. The operator now -swings the handle G of the cam-'lever G downward, so that the pawl D engages with its outermost tooth one of the teeth A and then the pawl swings inward to I mesh all its teeth D2 with 'the corresponding teeth A of the shank A. At the same time that this takes place a swinging movement is given to the jaw C, which also moves bodily f sidewiseto iirmly clamp the object between the jaws B and C. When it is desired to release the object, the operator swings the handle G backnto normal position, asindicate'd in Fig. l, to 'cause the jaw C to-swing back to its ori inal position, thus releasing the ohj ect.- y the operator now pressing the handle D3 outward the pawl D can be completely disengaged from the teeth A of the shank A.

The woodworkerfs clamp .shown and de scribed permits an easy and quick adjust- IOO IXUS

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tion of the cam-lever G'by swinging the said cam-lever and by moving the same bodily sidewise, as above mentioned.

The woodworke'rs clamp is very simple and. durable in construction, is-com osed of 'comparatively few parts, and'is not 'iable to geteasily out of order.

Having thusdescribed Amy invention, I claim as new and desire to secure by Letters Patentv 1. A' clamp `comprising a shank having teeth at .its inner edge, a vjaw forming part of the shank, a'jaw movable on the shank, a sring-pressed awl pivoted on the said mova le jawrand a apted to-engage the teeth on the said shank, the

l swinging motion on t e said movable jaw to normally hold the pawl at an angle relative to the shank, and aeam-lever ulerumed on the movable jaw andbearing on the back of awl having e alimited the said shank to impart a swinging motion to the movable jaw, the latter swingingi'rom the pawl 'as the fulcrum.

A2. A clamp comprising a shank provided at one end with a fixed jaw and having its inner edge formed with ratchet-teeth, a move able jaw Slidable on the said shank in the direotion of the length thereof and movable sidewise of the shank, a pawl ulerumed on `the Said movable jaw and having ratchet-t teeth for engagement with the ratchet-teeth on the said shank, the heel of the said pawl being adated to rest on a proj eetion on the said mova gle relative to the Said shank, a spring pressing the said pawl to engage the outermost tooth with a tooth on the shanlg and a cam-v lever ulerumed on the said movable jaw and bearingv on the back of the' said shank.

Inl testimony'whereof I have Signed .my

name to this speoicationin the preseneexuf two subscribing witnesses. v

JOHAN EMIL HILLEBRAN DT.

Witnessesz/ FRANK NOWAK, JOHN LORD OBRIAN.

le jaWto hold the paWl at an an-

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