US 273215 A
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- IO the opposite side of the bar, in which is an '15 the clampingaw is also the movable one; but
20 in which similar letters of reference indicate UNITED STATES PATENT OFFICE.
LUTHER D. WRIGHT, OF GARPENTERSVILLE, ILLINOIS.
SPECIFICATION forming part-of Letters Patent No. 273,2:15, dated February 2'7, 1883.
Application filed September 16, 1882. (Model.)
lever so as to bind against the bar a. it will press jaw toward jaw 12 and cause it to powerfully clamp any object between them, the movable jaw being properly set with respect to the To all, whom it may concern Be it known that I, LUTHER I). Wanna, of Carpentersville, Kane county, Illinois, have invented anew and Improved Clamp, of which the following is a full, clear, and exact description.
My improvement in clamps consists of one of the jaws having pivotal connection with the bar, together with a lever extension on be clamped. It is to be noted that the pivotal point It hears about the same relation to the top of the bar at and the base of the jaw b in both arrangements.
as new and desire to secure by Letters Patent- 1. In a clamp, the rack or toothed bar, ajaw fulcrumed upon said bar to oscillate thereon, and having downward-extended arms, and an eccentric-lever which swings and binds the jaw fast on the work, said jaw either pivoting on the ratchet-notches of the bar or a pivot connecting it to said bar. In theformer case of the jaw and adapted to bear against the rack or toothed bar, in combination with an opposing jaw, one of said jaws being adapted to slide upon and engage with the teeth of in the latter case the other one is movable, all as hereinafter fully described. v
Reference is to be had to the accompanying drawings, forming part of this specification,
pose set forth.
2. In aclamp, the combination of a rack or toothed bar, a movable jaw, and a fixed jaw,
one of said jaws having parallel arms einbraccorresponding parts in all the figures.
Figure 1 is a perspective view of my con;
trivance, in which the leveraw is also the movable one. Fig. 2 is a sectional elevation of the jaws and side view of the bar of the clamp, in which the lever-jaw is pivoted to the bar and the otherjaw is the movable one; and Fig. 3 is an end elevation of Fig. 2 as seenlookin g toward the left hand.
0 The bar a of the clamp will have afixed jaw, 11, andratchet-notches 0 along the upper surface, the lever-jaw 6 being adjustable along it and pivoting in its notches; or it will have the lever-jaw e pivoted to it at one end, with ratchet- 3 5 notches cin the under side of flanges f, with the jaw I) made to slide along it and fastening by the catches g. In either case the lever-jaw e tween the arms of said jaw and bearing directly against the rack-bar, as shown and described, and for the purpose set forth.
3. In a clamp, the combination, with the the pivotal jaw 0, having the pivotal point 70, adapted to engage with the teeth or rack c of the bar a, said jaw 0 also having arms i, between which is hung the eccentric-lever I, hearing directly against the bar a, substantially as 7 and for thepurpose set forth.
LUTHER D. WRIGHT.
has arms 41 extending beyond the pivotal point It, and having an eccentric-lever, l, pivoted to them in such manner that by swinging said Witnesses t O. E. GRIFFITH,
A. L. PETERSON.
other one and the dimensions .of the object to 5 Having thus described my invention,I claim eccentric or cam lever hung between said arms 5 the rack-bar, substantially as and for the pur- 6o ing said bar, and an eccentric-lever hung be- 6:
toothed or notched bar at, having thejaw b, of 71