US1562671A

US1562671A - Gearing

Info

Publication number: US1562671A
Application number: US4257A
Authority: US
Inventors: Raymond S Zeitler
Original assignee: Individual
Current assignee: Individual
Priority date: 1925-01-23
Filing date: 1925-01-23
Publication date: 1925-11-24
Anticipated expiration: 1942-11-24

Description

' R. S. ZEITLER Nov. 24 1925.

GEARING Filed Jan. 23. 1925 2 Sheets-Sheet Nov. 24, 1925.

1,562,671 R. s. ZEITLER GEARING Filed Jan. 23, 1925 2 Sheets-Sheet 2 Patented Nov. 24, 1925.

tlNiTED STATES RAYMOND S. ZEEITLER, OF CHICAGU, 115141151013.

GEARING.

Application filed January To all lliilOlilt-Z' may concern:

Be it known that I, RAYMOND S. Znrrnnu, a citizen of the United States, residing at Chicago, in the county of Cook and State oi": Illinois, have invented a new and useful li'npi'ovement in Gearing, of which the following is a specification.

My present invention relates to the provision of gearing mechanism for operating hand brakes on railroad cars. Such brake operation is required in emergency situations and also for switching when the train pipe carrying the air is disconnected. The operative limit of movement of braking structures in use on railroad trains is rigidly regulated, a certain definite extent of move ment for taking up play being specified bcltore the brakes commence to set, and a certain further definite extent of movement is specifiedin which the brakes must be set. The usual and most ordinary extent of play is some 6 inches, and 12 inches or movement isailowed for setting the brakes. In amechanism for the hand operation of the brakes but little power is necessary for taking up the play, and it is desirable to be able to take up the play rapidly; but when the brakes are being set increased power is necessary, and it is desirable to have at command a considerable additional power. It has, therefore, been my object to provide mechanism for operating the hand brakes which, with a continuous movement of the ham brake wheel, will rapidly take up the play, and when the play has been taken up will afford considerable additional power for setting the brakes. I have had a further object to provide such facilities in a compact and sturdy structure of dependable operation.

I have secured the aforesaid objects by means of the mechanism illustrated in the accompanying drawings in which,

Fig. 1 is a central vertical section through the gear train, drum and housing;

Fig. 2 is a plan oi the gear train, the top of the housing being removed;

Fig. 3 is a section of line 33 of Fig. 1 showing the segmental gears for eltecting the take up; and

Fig. a is a section on line 47*4: of Fig. 1 showingthe pinion and segmental gear cooperating therewith for changing the gear ratio.

Fig. 5 is a tragmental elevation showing 23, 1925. Serial No. 4,257.

the relation of coi'i'iplete gear 7 and segmein tal gear 8.

lhroughout the several drawings 1 have played the same reference characters to ignate similar parts. The mechanism is mounted in any suitable container, for instance, a cage container, such as is shown, comprising top and bottom plates A and l3 ith right angled flanges A ant. B, which are bolted together.

Pinned, or otherwise fixedly secured to the brake mast or shaft 5 is a complete or entire pinion 6, the hub of which is jour naled in the top plate A. This pinion 6 meshes with an enlarged and also complete pinion 7 formed upon the upper portion of the periphery of the gear block upon which all the intermediate gear elements are formed, which gear block rotates upon a pin em de C extending between plates A and B of the housing. The teeth of a portion of the pinion 7 are vertically extended to form a segmental or incomplete gear, as at 8. This segmental gear 8 meshes with a co-operating segment 9 of a radius equal to that of the gear 6, provided upon the top 01 a gear block 10-, which gear block is journaled to rotate upon the brake mast or rod 5 just below the pinion 6. Integral with and de pending from the central portion of the disc carrying the gears 7 and 8 is a pinion 11 concentric with the gears 7 and 8 but of smaller radius. Provided upon the periphery of the block 10 is a segmental gear 12 which meshes with the pinion 11. The segmental gears 8 and 9 are so circumferentially related to the segmental gear 12 that when the segmental gears 8 and 9 pass into mesh the segmental gear 12 passes out of mesh with the pinion 11, and vice versa.

Provided upon the lower portion of the block 10 is a pulley or drum 13 with radial lugs 14 between which lugs is secured the end oi the brake chain by means of a bolt 15, and around which drum the brake chain is wound and unwound as the gears are caused to function by the rotation of the brake mast or shaft. Upon the lower face of the drum or pulley 13 is a reduced extension 16 which is journaled in the lower housing plate B.

The operation of my device is as follows:

Upon the initial rotation of the brake mast or shaft 5 the gear 6 co-acting with the gear 7 rotates the segmental gear 9 through the elongated segmentally disposed teeth 8. This causes the rotation of the drum 13 at the same speed and in the same direction with the rotation of the brake mast or shaft. As the segments 8 and 9 go out of mesh, the pinion 11 of relatively small radius, engages with the segment 12 of relatively large radius, thereby developing a much diminished speed and increased power for the turning of the pulley or drum.

It is obvious that the radiuses of the gears may be altered and also the circumferential extent of the segmental gears so that the proportions of take up and the power ratio can be varied as may be desired in any particular application. t will also be seen that no particular manipulation is required to cause the functioning of my device as the mere turning of the brake mast or shaft will cause the successive engagement and disengagement of the respective segmental gears.

Havin described my invention what I claim as new and desire to secure by Letters Patent, is 2- 1. A mechanism for ope 'ating hand brakes or the like, comprising a drive shaft. a gear fixedly secured thereto, a drum and a pair of complementary segmental gears fixed with relation to each other and journaled upon the drive shaft, a gear block rotatably mounted and provided with two complete gears and a segmental gear for engaging said gear fixed to the drive shaft and the segmental gears rotatable thereon.

2. A mechanism of the kind described comprising a drive shaft, a gear fixedly secured thereto, two complementary segmental driven gears and a pulley fixedly secured with relation to each other, and' pivoted concentrically with said drive shaft, and an independently pivoted gear block provided with two complete and an intermediate segmental gear meshing with the gears aforesaid.

3. A mechanism of the kind described comprising a drive shaft, a gear fixedly secured thereto, two complementary segmental driven gears and a pulley fixedly secured with relation to each other, and an independently pivoted gear block provided with two complete and an intermediate segmental. gear meshing with the gears aforesaid.

at. A mechanism of the kind described comprising a drive shaft, a gear fixed thereto, two segmental complementary gears and a driven member concentrically disposed and fixedly related to each other, and three gears fixedly related to each other, one of which is a segmental gear, disposed to maintain constant mesh with said first mentioned gear and to secure the progressive engagement of the complementary segmental gears.

5. A mechanism of the kind described comprising a drive shaft, a gear fixed thereto, two segmental complementary gears and a driven member concentrically disposed and fixedly related to each other, and three gears fixedly related to each other and co-actively related respectively to said drive shaft gear and said complementary segmental gears.

RAYMOND S. ZEITLER.