US751202A

US751202A - Bolt-clipper

Info

Publication number: US751202A
Authority: US
Publication date: 1904-02-02
Anticipated expiration: 1921-02-02

Description

NO. 751302. PATENT H. K. PORTER. ED FEB z, 1904.

BOLT CLIPPER.

APPLICATION FILED JUNE 29,1903.

2SHEETSSHBET 1.

N0 MODEL.

No. 751,202. PATENTED FEB. 2, 1904.

H. K. PORTER.

BOLT CLIPPER.

. APPLICATION FILED JUNE 29, 1903. H0 MODEL. 2 SHEETSSHEET 2.

UNITED STATES Patented February 2, 1904.

HENRY K. PORTER, OF CHELSEA, MASSACHUSETTS.

BOLT-CLIPPER.

SPECIFICATION forming part of Letters Patent No. 751,202, dated February 2, 1904.

I Application filed June 29, 1903. Serial No. 163,451. (No model.)

To all whom it may concern:

Be it known that LHENRY K. PoRTER,a citizen of the United States, residing at Chelsea, in the county of Suffolk and State of Massachusetts, have invented a new and useful Improvement in Bolt-Clippers, of which the following is a specification.

My invention relates to the adjustment of the cutters in bolt-clippers, and has for its object to provide improved means for adjusting the movement of the cutting-blades to and from each other, so as to compensate for the variations thereof arising from wear of the same in the ordinary use of the tool; and I attain said object by means of the devices illustrated in the accompanying drawings, in which Figure 1 is a plan or side view of a bolt-clipper embodying my invention with the outer end of the handles broken ofi Fig. 2 is an edge view of the same. Fig. 3 is an enlarged cross-section taken as on line as 00, Fig. 1. Fig. 4, 5, 6, 7, 8, 9, 10, 11, 12, and 13 are side and top views of the eccentric bolts by which the handles and cutter-levers are jointed together and variously toothed or notched to interlock with corresponding notches in the edges of annular bosses on the handles.

The preferred form of such interlocking clevices for adjusting the relations of the handles and cutter-levers through the eccentricity of the connecting-bolts is shown in Figs. 1, 2, 6, and 7, although the modifications thereof, as shown in other figures, may be practically used with substantially the same results and without departing from the principle involved in the construction preferred.

Outside ofthe method shown of hinging or jointing the cutter-levers A A and handlelevers B B together by means of eccentric bolts 1) the tool is the same as heretofore made and patented by me. As shown in Fig. 7 the bolts each have a threaded part a, an eccentric portion 6, an enlarged concentric part c, and a hexagonal head (Z, having teeth or notches e in its under side. Referring to Fig. 3, it will be seen that the bolts when in place pass through the forks of the handlelevers B and B, the cutter-levers A and A, and are secured by nuts C and C, threaded thereon, the eccentric part b of the bolt fitting a hole in the cutter-lever, while the parts a and c fit holes in the handle-lever. Upon one side each of the handle-levers have hollow bosses E E, the circular edges or rims of which are notched,as shown,and these notches F confront the notches c of the bolt-head and interlock therewith to prevent the bolt when actuated by the handles from turning about its own axis and disturbing the relative position of the eccentric part b when the clipper is adjusted in that respect, and it is further secured by turning nut C against the opposite smooth-faced boss G. By slacking the nut and partly withdrawing the bolt far enough to disengage the teeth the bolt may be turned one or more notches, thereby changing the position of the eccentric part in its cutter-lever and the relation of such lever to the handlelever. Thus the ends of the cutter-levers may be set nearer together or farther apart, accordingly as the bolt is turned, to the extent of a half-revolution, and through their pivoted levers the opening and closing of the cutting-blades H and H are efiected accordingly. This is a very convenient and effective method of adjusting the relations of the cutting edges H and H under the various changes which arise from the wear of the tool in practical use. 7 While this method of adjustment is shown as applied only to the two outer joints D and D it might also be applied to the middle or handle-lever joint D and thus eifect a compound adjustment in a finer degree of the cutters; but such adjustment of the two outer joints is thought to be practically sufficient.

The modifications shown are confined to the devices by which the bolts and handle-levers are interlocked to secure the adjustments desired and may be described, briefly, as follows: In Figs. 4 and 5 are shown views of a bolt D, the circular head cl of which has teeth formed thereon, so as to interlock with teeth on the handles formed around the interior edges of a circular recess B in the handle, as shown in Figs. 12 and 13, and in Figs. 8, 9, 10, and 11 are shown an end and side view of an eccentric bolt having a hexagonal head (Z adapted to interlock its corners with the angles formed around a recess B in the handles.

bolts being adapted to adjustably interlock with suitable teeth provided on the handles, for the purposes specified.

2. In a bolt-clipper, the combination of a pair of cutter-levers; a pair of handle-levers; a pair of eccentric bolts by which the two pairs of levers are jointed together the bolts and handle-levers being provided with confronting teeth which adjustably interlock and prevent the turning of the bolts as specified.

HENRY K. PORTER.

WVituesses:

EUGENE HUDHHREY, JAMES F. DE CAsTRo.