US1166787A

US1166787A - Throttle-lever mechanism.

Info

Publication number: US1166787A
Application number: US4979315A
Authority: US
Inventors: Frank E Russell
Original assignee: Individual
Current assignee: Individual
Priority date: 1915-09-09
Filing date: 1915-09-09
Publication date: 1916-01-04
Anticipated expiration: 1933-01-04

Description

F. E'. RUSSELL.

THROTTLE LEVER MECHANISM.-

APPLICATION FILED SEPT. 9, I915,

2 SHEETS-SHEET l.

Patented Jan. 4, 916] F. E. RUSSELL.

'nmoma LEVER MECHANISM.

APPLICATION FILED SEPT. 9, I915.

Patented Jam.- 4,1916.-

vide a stulling box yoke. 7, having a trans-- OFFICE. I

FRANK E. RUSSELL, OF ALAMEDA, .QALIFORNIA.

THROTTLE-LEVER MECHANISM.

To all whom it may concern-L1 Be it known that I, FRANK E. RUssnLL, of Alameda, in the county of Alameda and State of California, have invented a certain new and usefulIm rovement in Throttle- Lever Mechanism, of which improvement the following is a specification. j

The object of my invention is to provide means whereby the accurate and positive graduation of a throttle valve may be effected; the objectionable results of imperfective latching of the throttle lever be prevented; and proper alinement of the working parts of the valve operating mechanism,

' with elimination of unnecessary friction, be

insured.

leverand the throttle stem; vFig. 5, a rearview of the stuffing box yoke; Fig. 6, a plan view, on an enlarged scale, of the latch and iide' and Fi 7 a horizontal section.

through the same.

Referring to the drawings, my invent on is herein exemplified as applied for the operation of a balanced puppet throttle valve, 1, which is seated, in the ordinary manner, at the top of a vertical throttle pipe, 2,

which is supported in the dome, 3, of a locomotive boiler, and communicates, at its bottom, with the dry pipe or main supply pipe, 4, the throttle valve controlling, as

usual, communication between the steam space within the boiler and dome and the interior of the throttle pipe and dry pipe. The throttle valve is coupled to a throttle stem, 5, which extends rearwardly and outwardly through a stuliing'box, G, secured to the rear head, 3 of the boiler.

In the practice of my invention, I -proverse opening, 7*, which fits around the outer portion of the stullmg box. the yoke abutting against the inner portion thereof and being secured thereto, transversely to the Specification of Letters Patent.

.throttle stem, 5,, by the bolts, 6", and nuts,

6, which compress the gland 6, on the packmg. A segment, 8, on the outer side of Patented J an.4, 1916.

Application filed September 9,4915. Serial 170.49,?93.

which there is formed a plurality oftee'th,

S, is secured, by bolts, 8", to one end of the yoke, 7', and a fulcrum bar, 9, is secured, by bolts, 9,'to the opposite end of the yoke. A throttle lever, 10, having a; handle, 10*}, on its outer or freeend,.is pivoted, at its'opposite, end, to the 'fulcrum bar, by a pin,- 10 A latch lever, 11, having a handle, 11, is coupled to the throttle lever by a link, 11", the connection of the .two levers being made so that thcirhandles adjoin each other and can be coin'cidently grasped by the engineman. A latch, 12, having a plurality of teeth, 12", on one of its ends, adapted to engage the teeth of the segment, 8,.is connected, by a pin, 12", to the inner endof the latclrlever, 11, and is fitted to slidebetween the throttle lever, 10, and a latch guide, 13, secured to thethrottle lever by a bolt, 13. The latch is normally, or except when released by movement of the latch lever, held in engagement with the segmentjby a spring, 14, fitted in a longitudinal slot in the latch. and abutting against the bolt; 13. The latch guide serves also as'a guide or keeper for the throttle lever and prevents it from being thrown or lifted out of position.

A substantially U-shaped throttle lever yoke, 15, is secured to the o'uterend'of the -tle lever, 10 is coupled to the opposite end of the yoke through'the intermediation ofa link, 16, one end of which is pivoted to the yoke, by a' pin, 16", and the other to the throttle lever, by a pin, 16". This construction converts the curved lIlL :ement of the throttle lever into rectilineal movement of the throttle stem, eliminating, unnecessary movement of the latter, and relieving strain upon the packing of the stuffing box, which needs to be only sulliciently tight to maintain a steam tight joint around the stem.

The throttle lever may be adjusted to any desired height or angle, by changing the location ot the stulling box bolts. and in the event of repairs being required, it is only necessary to remove said bolts and the key by which the throttle lever yoke is secured to the throttle stem, upon which the entire throttle lever nmchanism nay be detached. If it is required to continue the locomotive in service while repairs to the throttle lever 1 stem, a yoke throttle stem in the stuthng posite end of said bination of a of said yoke, a segz'nent secured voke, and a throttle lever mechanism being made, a spare mechanism may be substituted and delay correspondingly avoided.

Among the advantages which have been developed in practical service by my invention, there may he noted the capacity of ac curate and. positive graduation of the Within one tenth of valve he elimination of the floating the throttle lever which has been experienced with prior constructions, rendering it unnecessary for the engineman to use a stick, wrench, or other device for holding the throttle valve in any desired posi- Further, cramping action of the box is eliminated, by which the life 01 the packing is increased, and the throttle valve is rendered more easily operable. 'l. he connection of the throttle lever segment and its fulcrum by the stufiing box yoke insures proper alinement of the Working parts andeliminates uzn'iecessary friction, and enables all parts to he assembled in the machine shop, reducing to the minimum the Work in the erecting shop or round house. Adjustment of the throttle lever to desired height is permitted without involving change of detail parts.

I claim my invention and desireto secure by Letters Patent:

1. In a throttle lever mechanism, thecombination of a longitudinally movable throttle stem, a fixed yoke extending transversely thereto, a fulcrum bar secured to one end of Said y kc, a segmentsecured. to the op yoke, and a throttle lever pivoted to the fulcrum bar and Working over the segment.

2. In a throttle lever mechanism, the comlongitudinally movable throttle stem, a stuffing box surrounding said detachably secured to said extending transversely to secured to one end to the op stuffing box and said stem, a fulcrum bar posits end of said pivoted to the fulcrum bar over the segment.

and Workin g eagles of this patent may be obtained for five cents each, Washington, D.

In a throttle lever mechanism," the combination of a: longitudinally movable throttle stem, a stu .ing box surrounding said stem, a gland fitting in the stufling box, bolts connecting said gland to the'stuliiug box, a yoke detachably connected to said bolts and extending transversely to the throttle stem, ,1

to one endof sa d a fulcrum bar secured v yoke, segment secured to the opposite end of said yoke, and a throttle-lever pivoted to the fulcrum bar and working over the segment. 4 l. In a throttle lever mechanism, the combination of a longitudinally movable throttle stem, a stu "ng box surrounding said stem,- a yoke fitting stulling boX and extending transversely to the stem, a segment fixed to one end of the voke,-and a throttle lever coupled to the opposite end of the yoke and to the throttle stem. In a throttle lever mechanism, the combination of a longitudinally movable throttle stem, a fixed yoke extending transversely thereto, to one end of said yoke, a segment secured to the opposite end. of said yoke, a throttle lever pivoted to the fulcrum bar and Working over the segment, a yoke fixed to the throttle stem, and a; link coupled to said yoke and to the throttle 6. In a throttle lever mechanism, the combination of a longitudinally movable throtyoke extending transversely a tulcrumbar secured to one end of said yoke, a. segment secured to the opposite end of said yoke, a throttle lever pivoted to the fulcrum bar and working over the segment, a latch guide secured to the throttle ever and fitting on the" side of the segment opposite the a spring latch adapted to traverse between the throttle lever and guide, and a latch lever coupled to said latch and to the throttle lever.

FRANK E. RUSSELL. Witnesses: Wrnrmw Prooron SMITH,

M. CRAMER.

by addressing C.

the Commissioner of Patents.

DISCLAIMER- 1,166,787.Fmn7c E. Russell, Alameda, Cal. TI-IReTTLE-LEVER MECHANISM. Pet

ent dated Jenuery 4, 1916. Disclaimer filed July 6, 1916, by the patentee.

Enters tliis disclaimer to, and disclaims, the entire subject-matter claimed in said Letters Patent.

[Ofiieial Gazette, July 11, 1.916.]