US565899A

US565899A - Moses g

Info

Publication number: US565899A
Authority: US
Publication date: 1896-08-18
Anticipated expiration: 1913-08-18

Description

(No Model.)

M. G. HUBBARD, Jr.

SWITCH sTAND.

Patented Aug. 18, 1896.

&

' UNITED STATES PATENT OFFICE.

MOSES G. HUBBARD, JR, OF CHICAGO, ILLINOIS, ASSIGNOR TO THE MCGUIRE MANUFACTURING COMPANY, OF SAME PLACE.

SWITCH-STAN D.

SPECIFICATION forming part of Letters Patent No. 565,899, dated August 18, 1896.

Application filed June 17, 1895. Serial No. 553,085. (No model.)

To all whom it may concern.-

Be it known that I, MOSES G. HUBBARD, Jr.

a citizen of the United States, residing in Chicago, in the county of Cook and State of Illi- 5 nois, have invented certain new and useful Improvements in Switch-Stands, of which the following is a specification, reference being hadto the accompanying drawings, in which- Figure 1 is a perspective View. Fig. 2 is a plan view of the target-pinion. Fig. 3 is a plan view of the actuating-rack, part being broken away.

My invention relates to improvements in switch-stands; and it consists of improved mechanism for operating the target to correspond with the position of the switch, as will be hereinafter described.

That which I claim as my invention will be more particularly set forth in the claims.

In manufacturing switch-stands one of the diificulties encountered is the number of changes required to accommodate different lengths of throw required for different switches, and one of the most troublesome of such changes is the adjustment of the throw of the target to correspond to the throw of the switch, as it is necessary that the target should turn just a quarter of a revolution whatever may be the throw of the switch. My present invention overcomes this objection by so constructing the stand that the target will turn only a quarter of a revolution by the action of the switch-stand without any change or adjustment, whether the throw of the switch be three and one-half or six inches, the usual lengths of throw. I accomplish this as hereinafter described.

Referring to the drawings, 4 indicates the lower end of the target-spindle, which is pivotally supported upon a base 5 in the usual manner. Near the lower end of the spindle at is provided a mutilated pinion 6, having two fiat faces 7 8 arranged at about right angles to each other. As shown in Fig. 2, the flat faces of the pinion 6 are tangent to the pitchline of said pinion. Between the faces 7 8 is a recess'9, as shown in Figs. 1 and 2.

1O 11 indicate supports, in which is journaled a shaft 12, carrying a pinion 13, pref- 5o erably mutilated, as shown in Fig. 1.

14c indicates the usual lever by which the shaft 12 is rotated.

15 indicates a rack-bar, which meshes with the pinion 13, and is reciprocated by the rotation of said pinion. The rack-bar 15 is connected with the switch, and by the reciprocation of such bar the switch is thrown. At the side of the rack-bar 15, adjacent to the pinion 6, is a laterally-projecting bar 16, having flat faces 17 18, between which is atooth 19, adapted to enter the recess 9 in the pinion 6. The faces 17 18 are adapted to lie parallel with the faces 7 8, as shown in Fig. 1.

It will be evident from an inspection of the drawings that when the rack-bar 15 is reciprocated in one direction or the other the tooth 19 will engage the recess 9 in the pinion 6, thereby causing said pinion and the target-spindle to rotate; and the pitch diameter of said pinion is such that the shortest throw will move the target-spindle a full quarter turn. If a longer throw of the switch is intended, the flat surfaces of the bar 16 and pinion 6 will permit of the rack 15 and bar 16 moving the extra distance at each end of the stroke without effecting additional rotation of the target spindle. The result is that, whatever may be the throw of the switch, the target-spindle will in no case be turned more than ninety degrees.

It will be understood that the shape of the pinion and of the bar which operates it may be altered without departing from the spirit of my invention.

That which I claim as my invention, and desire to secure by Letters Patent, is-

1. In a switch-stand, the combination with a reciprocating switch-bar, a laterally-proj ecting tooth carried thereby, and plane surfaces at each side of said tooth, of a target- 9 spindle, a mutilated pinion carried thereby,

said pinion being adapted to be engaged by said tooth, and means for reciprocating said switch-bar, substantially as described.

2. In a switch-stand, the combination with a reciprocating switch-bar, a laterally-proj ecting tooth carried thereby, and plane surfaces at each side of said tooth, of a targetspindle, a pinion 6 having flat surfaces 7 8 and an intermediate recess 9 adapted to receive said tooth, and means for reciprocating said a pinion 13 meshing with the tooth of said switch-bar, substantially as described. rack-bar, and alever for rotating said pinion, 1o

3. In a switch-stand, the combination with substantially as described. a reciprocating rack-bar, a laterally-project 5 ing" tooth carried thereby, and plane surfaces MOSES G? HUBBARD at each side of said tooth, of a target-spindle, Witnesses: V a mutilated pinion carried thereby, said pin- ALBERT H. ADAMS,

ion being adapted to be engaged by said tooth, HOLMES A. TILDEN.