US299776A

US299776A - Jean gibaud

Info

Publication number: US299776A
Authority: US
Publication date: 1884-06-03
Anticipated expiration: 1901-06-03

Description

UNITED STATES PATENT OFFICE.

JEAN GIRAUD, OF OAUDEBEC-LES-ELEEUF, FRANCE.

CLAMP.

SPECIFICATION forming part; of Letters Patent No. 299,776, dated June 3, 1884.

Application filed April 7, 1884.

Figure lis a side view of my improved clamp before locking it to fasten the article or materia1 which is to be clampcd. Fig. 2 isa similar view showing the device clamped or locked,

and Fig. 3 is a plan or top view.

Similar etters of reference indicate corre- 2o sponding parts in all the figures.

My invention has relation to clamps or holding devices for the use of carpenters, cabinetmakers, and other artisans; and it consists in the construction and combination of parts of the clamping device, which will be hereinafter more fully described and claimed, which can be readilymanipulated by one hand, and can be applied to any work-bench of ordinary construction.

In the accompanying drawings, A denotes the top or table of a work-bench, and 1) one of several apertures 1nade therein for the insertion of the shank or stem 0 of the device.

' The letter B denotes 'ablock of wood, which 5 is clamped upon the bench by means of the device. The stem orshank 0 bas a projecting curved head, 0, provided With projecting lips D at its onter end, through which ab0lt,

' d, is inserted transversely, forming a fulorum 0 or bearing for an arm, E, the outer end of which forms the clampingjaw e. The opposite end of arm E is slotted or bifurcated for the insertion of a cam or eccentric, F, which is hinged upon the bolt G and provided with a handle, f, for operating it.

(No model.) Patonted in France September 12, 1883, No. 157,512.

From the foregoing description, taken in connection with the drawings, the manner of using this device will be readily understood. WVhen lever f is in the position shown in Fig.

1, the block B or other article to be clamped upon the table may readily be placed under the jaw 6, as the device ean be raised or 10W- ered through the aperture I) in the table t0 conform to the thickness of the article to be clamped. By now turning handle fdown into the position indicated in Fig. 2, it willbe seen that the jaw e Will be brought down upon the bloc]: B with considerahle pressure, so as to hold it fixed in its position upon the table. By turning handlef back into its former position the b1ook can be removed in a moment of time.

Iam aware that clamps of this class have been constructed before involving the combination of a stem or shank adapted to be inserted through an aperture in the work-bench, 6 5 a bearing at the upper end of the shank, and a jaw pivoted in said bearing and actuated by a cam or eccentric operated by a lever; nor do I claim this construction and combination, broadly; but

XVhat I daim as my improvement, and desire to secure by Letters'Patent of the United States, is

The combination of the curved bearing C, having stem or shank C and projecting lips D at its outer end, arm E, pivoted upon and adapted to bear against the bearing Cbetween its lips D, thns relieving the fulcrum-bolt d from strain, and cam or eccentric F, having handle f.

In testimony that I daim the foregoing I have herennto set my hand this 24th day of Jannary, 1884.

JEAN GIRAUDi Nitnesses:

FRDRIC l\IATRY, EDWARD P. I\IAOLEAN.