US404601A - Cable-grip - Google Patents

Description

3 Sheets-Sheet 1.

(No Model.)

' G. S. CHAPMAN.

CABLE GRIP.

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CABLE GRIP.

Patented June "4, 1889.

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UNITED STATES PATENT OFFICE.

CHARLES S. CHAPMAN, OF KANSAS CITY, MISSOURI.

CABLE-G RIP.

SPECIFICATION forming part of Letters Patent No. 404,601, dated June 4, 1889.

Application filed December 19, 1888- Serial No. 294,066. (No model.)

f0 aZZ whom, it may concern:

Be it known that 1, CHARLES S. CHAPMAN, of Kansas City, in the county of Jackson and State of Missouri, have invented a new and Improved Cablc-Grip,of which the following is a full, clear, and exact description.

This. invention relates to cable-grip mechanisms; and it consists, essentially, of the novel constructions and combinations of elements to be hereinafter described, and specifically pointed out in the claims.

Reference is to be had to the accompanying drawings, forming a part of this specification, inwhich similar figures and letters of reference indicate corresponding parts in all the views.

Figure 1 is a side 'view of my improved cable-grip, parts being broken away. Fig. 2 is an end view of the same. Fig. 3 is a side view of a portion of the grip, parts being broken away. Fig 4 is an end view on partial section. Fig. 5 is a central sectional elevation of the main fixed frame and of the body-sheet casting. Fig. 6 is a plan view of the fixed frame and body-sheet casting or head, the rack, link, and lever being removed. Fig. 7 is a side cross-head. Fig. 9 is a plan view of the crosshead. Fig. 10 is an edge view of the crank. Fig. 11 is a side view thereof. Fig. 12 is a plan view of the two halves of the crank.

In the drawings, 10 10 represent the castings which constitute the main fixed frame of the grip-operating mechanism, these castings being bolted 0r riveted to shanks 11, to which the grip-heads 12 are secured,spaces a, adapted to receive standards carried by the car body or platform, being left beyond the shanks 11, the standards being riveted or bolted to place, as will be readily understood. By this arrangement, should the standards become bent or broken, owing to any undue shock, new standards may be substituted without changing the entire grip-operating mechanism.

The castings 10 are formed with plane bearing-surfaces b, which serve as ways fora casting 13, which constitutes the head of the body-sheet 14, said body-sheet being connected in any desired manner with toggles, by means of which the jaws 15 are moved to grip upon the cable 16. (See Fig. 2.) The casting 13 is centrally cored to receive a link 17, said Fig. 8 is a side view of the ing-screw 24, that engages a threaded aperture formed in the upper end of the link 17.

In connection with the link 17, I arrange a crank 30, formed of sections 0 and d, each section being provided with a trunnion 31, said trunnions riding in bearings formed in the castings-10.

Upon the approaching faces of the cranksections there are formed bosses 32, 32, 33, and 33, the boss 32 being recessed to receive a projection 34, formed on the boss 32, and both bosses and the crank-sections being apertured to receive a uniting bolt or rivet 35. The bosses 33 and 33 of the two crank-sections abut, as is clearly shown in Figs. 4 and 10. In the lower end of the link 17 there is an aperture 6, within which the bosses 32 and 32 are passed prior to the introduction of the rivet 35.

In order that the crank 30 may be moved to rock the link 17, I mount a bifurcated lever 50 upon the extending ends of the trunnions 31, the lower ends of the short arms of the lever 50 being apertured to receive a bolt 51, that is passed through the lower portion of the crank 30, the lever-arms being provided with bosses 36, which abut against bosses 37, formed upon the outer faces of the cranksections.

Between the sections of the bifurcated end of the lever 50 there is arranged a toothed rack 39, which said rack is engaged by a pawl 40, said pawl being normally held in engagement with theteeth of the rack 39 by a spring 41, surrounding the ha'ndle-bar 42, which is mounted to slidein guides carried by the lever 50, the said spring being arranged between a collar on the handle-bar and a washer loosely mounted on the said bar and resting against one of the guides carried by the lever 50. The handle-bar 42 is connected to a handpiece 43, that is pivotally connected to the lever 50, the hand-piece being recessed to receive the edge of the lever-handle, whereby all danger of catching the hand between the hand-piece and the lever-handle is avoided. In connection with the pawl and its operating mechanism I arrange proper regulatingnuts, such as those shown in the drawings.

In the drawings the parts are represented as they appear when the jaws of the grip are binding upon the cable. To unloosen said jaws, the lever 50 is thrown in the direction of the arrow shown in connection therewith in Fig. 1, and as the lever is so thrown the crank will be moved in the direction of its arrow, and in so moving will carry the link 17 upward, and as the link moves upward the bod ysheet 14: will also move upward, and the toggles will be moved to carry the jaws away from the cable.

To cause the jaws to grip upon the cablethe lever 50 is moved in a direction opposite that indicated by the arrow, the parts controlled thereby moving in a direction opposite to that above described.

As the parts become worn, a proper adj ustment may be secured through the medium of the adjusting-screw 2- Having thus described my invention, I claim as new and desire to secure by Letters Patent- 1. In a cable-grip, the combination, with a fixed frame to which the grip-heads are connected, of a movable frame arranged for connection with the toggles of the grip, a link pivoted in the movable frame, a crank pivoted in the fixed frame and pivotally connected to the lower end of the link, and a lever mounted upon the pivots of the crank and having the lower end of its short arm connected to the lower portion of the said crank, substantially as herein shown and described.

2. The combination, with a fixed frame arranged for connection with the heads of a grip and with a car body or platform, of amovable frame arranged for connection with the gripjaws, a crank carried by the fixed frame, a link connected to the crank and to the movable frame, a lever fulcrumed on the cranktrunnions and connected to the lower crankarms, a pawl carried by the lever, and a toothed rack with which the pawl engages, substantially as described. 3. The combination, with a frame made up of castings that are bolted or riveted together, of shanks 11, held by the castil'ig-uniting rivets, said shanks being arranged for connection with a grip-head, a body-sheet 14, arranged for connection with the grip-jaws, a casting 13, carried by said body-sheet, acrank 30, formed with trunnions 31, journaled in bearings formed in the castings first referred to, a link 17, pivotally connected to the crank, a cross-head carried by the link and journaled upon the casting 1.3, a lever fulcrumed upon the trunnions 31 and connected to the crank 30, a retaining-pawl carried by the lever, a rack with which said pawl engages, and a pawl operating attachment, substantially as described.

CHARLES CHAPMAN.

Witnesses:

.INo. M. TAYLOR, GEORGE F. MILLER.

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