US2066050A

US2066050A - Change speed mechanism

Info

Publication number: US2066050A
Application number: US686312A
Authority: US
Inventors: Henry J Perazzoli
Original assignee: Individual
Current assignee: Individual
Priority date: 1933-04-22
Filing date: 1933-08-22
Publication date: 1936-12-29
Anticipated expiration: 1953-12-29

Description

Dec. 29, 1936. H. J. PERAZZOLI CHANGE SPEED MECHANISM Original Filed April 22, 1933 4 Sheets-Sheet l Dec. 29, 1936. H J PERAZZOL] 2,066,050

CHANGE SPEED MECHANI SM Original Filed April 22, 1953 4 Sheets-Sheet 2 Dec. 29, 1936. PERAZZOLI 2,066,050

CHANGE SPEED MECHANISM Original Filed April 22, 1933 4 Sheets-Sheet 3 Dec. 29, 1936.

H. J. PERAZZOLI CHANGE SPEED MECHANI SM 4 Sheets-Sheet 4 Original Filed April 22, 1933 Patented Dec. 29, 1936 UNITED STATES PATENT OFFICE A Original application April 22, 1933, Serial No. 667,448. Divided and this application August 22, 1933, Serial No. 686,312

2 Claims.

This invention relates to new and useful improvements in railway track grinding machines and has particular relation to machines of this general character arranged to travel on the rails to be ground wherein the source of power operable to reciprocate the abrasive elements on the rails is available to propel the machine in its entirety from place to place along the track, and is a division of my co-pending application Serial No. 667,448, filed April 22, 1933, now Patent No. 1,999,943, issued April 30, 1935.

Another important object of the invention is to provide a machine of the general character set forth having novel means operable at will in conjunction with a source of motive power whereby the machine may be driven in either direction on the track at various speeds.

A more specific object of the invention is to provide a machine of the general character set forth having an internal combustion engine equipped with the usual change speed transmission comprising three speeds in one direction and one speed in the opposite or reverse direction, together with novel means operable at will to render the three speeds, otherwise available for travel of the machine in but one direction, available to propel the machine in either direction on the track.

The invention contemplates in addition, numerous other features and novel structural details which are set forth hereinafter and disclosed in the accompanying drawings in which:

Fig. 1 is a view in perspective of the machine embodying this invention with the body or superstructure removed therefrom to better display the operable mechanisms of the machine to which the present invention is particularly directed;

Fig. 2 is an enlarged view in section through the novel direction control mechanism on line 2-2, Fig. 1;

Fig. 3 is an enlarged View in section on line 3-3, Fig. 2;

i Fig. 4 is a View in section on line 4-4, Fig. 3;

Fig. 5 is an enlarged plan view of the central portion of the disclosure in Fig. 2, showing the relation of the various parts of the direction control mechanism in the neutral position;

Referring now more particularly to the drawings, the machine comprises longitudinal and transverse side and end frame members I and 2 respectively, and center sills 3. Axles 4 are mounted below and adjacent each end of the frame transversely with respect thereto, said axles 4 being mounted against springs (not shown) contained within housings 5 secured'to the-main frame of the machine. Traction wheels 6 are mounted at each end of the axles 4 beyond the side frame members I and are arranged to travel upon the track to be ground. In the present instance an internal combustion engine M constitutes the motive power for the various operative mechanisms of the machine, and the engine is supported by the frame and positioned longitudinally with respect thereto. The motor M in the present instance is of the ordinary automobile or truck type comprising the usual change speed transmission T, shift lever 8 and clutch lever 9.

The novel mechanism operable to change the effective direction of rotation derived from the motor M for transmission to the various mechanisms of the machine, is contained within a housing l secured to the rear end of the transmission T, and the drive shaft ll extends into said housing I I], being supported therein by a bearing l2. Abeveled gear l3 having teeth I4 is mounted on the end of said shaft II by means of a key I and arranged for rotation therewith. A shaft l6, constituting the main operating shaft of the machine, extends transversely through the, center of the housing l0 and has its ends journaled in bearings ll in brackets Ila mounted on the side frame and sill members I and 3 respectively.

A collar I8 is slidably mounted on the shaft "5 within the housing It! by means of keys l9 which, though permitting said collar to move longitudinally with respect to said shaft, prevent relative rotation of the collar and shaft. An annular planetary or face gear 20 is mounted at each end of the collar l8 and these gears are of such diameter that upon movement of said collar IS on the shaft IS in either direction, the teeth 2! of one of said gears 20 will mesh with the teeth M of the beveled gear l3 on the drive shaft II.

An annular groove 22 is formed in the collar [8 and arranged to receive a cam member 23, the inner concave surf-ace of which is doubly arced as shown at 24 and 25 for the purpose of eliminating any possible binding of said cam 23 in the annular groove 22. The upper or convex surface of the cam 23 is provided with a hole 26 to receive an eccentric pin 21 extending from the bottom of a circular bushing 28 which is similarly provided with an eccentrically positioned hole 29 in the top thereof to receive the end of a shaft 30. In the present instance a pin 3| extends diametrically through the circular bushing 28 and the lower end of the shaft 30 for the purpose of preventing relative rotation of said shaft with respect to the said bushing.

forth hereinafter.

w A top closure member 32 for the housing! is cast to include a vertical supporting sleeve 33 for the shaft 30 and the lower end of said sleeve portion extends inwardly of the housing I as at 34 to prevent upward movement of the bushing 28 and disengagement ofthe pin 21 from the hole 26 in the cam 23.

A bracket 35 is formed integral with the'cover member 3 2, the purpose for which will be set 3 A socket 36 is also formed integral with said cover and is intended to slidably receive a pin 31 compressible inwardly thereof against a spring 38. The upper end of the pin '31 is arranged to engage recesses 39 formed in the under side of a stop member 40 having a sleeve 4I which is keyedto the shaft 30, said recesses 39 and the stop 40 being suitablypositioned circumferentially of the shaft so that the latterfmay be releasably held in position when either one of the planetary gears 20 is meshed with the beveled gear I3 or inrneutral position.

- A circular; cam diskr42 is eccentrically keyed to the shaft 30 and it should, be particularly 1 noted that the position of'said cam 42 with respect to the shaft 30 ,is such that the diameter of the. cam which intercepts the axis of the shaft is, at an angle of approximately I4 degrees with the diameter of the shaft 30 which is horizontal with respect to Fig. 3 of the drawings, and the purpose for so offsetting the cam 42 will be brought out hereinafter.

. A substantially L-shapedcam arm 43 is pivlotally mounted on the upper end of the 'cover bracket 35; and a cam roller 55 is mounted at the end 'of' the short arm 46 thereof and arranged to ride.uponthefperiphery of: the cam disk 42. A rod 41 is slidably mounted in the clutch lever 9 and connected at one end to the end of the long arm 48.0f the cam arm 43. A

collar 49 is fixed on the rod 4'I:to engage the clutch lever 9 and rock the same forward to disengage the engine clutch when the cam arm 43 r is pivoted in a'clockwise direction with respect .to Fig. 4rby the cam disk 42.

30 is such that the cam arm 43 is permitted to pivot in a counterclockwise direction to engage the clutch only when'said shaft 30 is rotated, by movement of the handle 300; a quarter turn to the right or left with respect to Fig. 4,. to mesh either one of the planetary gears 20 with the beveled gear I3. 7 I y Y From the foregoingdescription it will be seen that by meshing one of the planetary gears 20 with the beveled gear I3 on the shaft II, rotation of the latter will be imparted to the shaft I6 in one direction and by meshing the other planetary gear 20 with said beveled gear I3, rotation of the shaft II will be imparted to the shaft Win the opposite direction. Consequently it will be obvious that with either one of the planetary gears meshed with the beveled gear I3,

the shaft I6 may be driven in that particular direction at each of the various speeds selected by operation of the transmission shift lever 8 in the usual manner. V

with respect thereto by means 'of keys 59.

Rotation of the mainv operating shaft I is imparted to one of the axles 4 to propel the machine along the railway track on the traction wheels 6, by means of a chain. 50 which passes about a sprocket wheel 5| mounted on said axle and about a sprocket wheel 52 secured to a hub 53 rotatably mounted with respect to the shaft I 5 by means of ,bearings 53a. In the present instance one annular face ofthe hub 53 abuts the adjacent face of the direction change mechanism housing I0 and movement of the hub 53 longitudinally of the shaft I6 is prevented by a tapered pin 54 which extends diametrically through an annular retaining ring 55 and the shaft I6. The outer annular face of the hub 53 is provided with circumferential jaws 56 which.

constituteone member of a jaw. clutch designated generally as at'A, said'jaws being arranged to engage complementary jaws 51 formed vonthe adjacent annular face of asleeve 58 adapted to rotate with the shaft I6 and is slidably mounted In the present instance theijaws'5'lgof the sleeve 58 are moved into or out of engagement with the jaws 56 on the hub 53 by means of a shift lever 60 pivoted as atBI to the housing I Ia which supports the bearing I! of the shaft I6. The lower end of the lever 60 is connected by means of aball and socket joint63 to a shipper rod 64 connected at its inner end as at 65to a ring segment 66 which rides ln'an annular groove 61 formed in the sleeve 58. A spring pressed pin 68 is mounted in the bracket IIa and is arranged to engage recesses (not shown) formed in the shipper rod 64 to'releasably lock the'shipper rod in its extreme positions when the jaw clutch A is engaged or disengaged respectively. In the present instance a brake drum 69 is mounted on the axle4adjacent the sprocket 5I and arranged to rotate with said axle internally of a brake shoe I0 which may be tightened about the periphery of the drum 69 to retard rotation of the axle 4 by a brake lever II operatively connected to saidshoe by rods I2. It willbe obvious that when the clutch A is engaged, rotation of the shaft I6 will be imparted to the hub 53 and sprocket 52 to the axle 4. v 1 V The customary abrasive blocks (not shown)' but usually connected to the pin 94 ofv-the crank 95 may be driven from the shaft I6, and driving connection is effected to said blocks by means of a clutch B, sprocket I01, chain I06, shaft -IOI,' chain 99, and shaft 93 which is connected to the crank 95 previously mentioned.

In the presentinstance the sprocket I0! is. rotatably mounted on the shaft l6 and is connected to the latter through a jaw clutch designated generally as B and operated'by means of a shift lever I08.

For the purpose of moving the entire machine from the track to a position at one side thereof, a, roller I09 is mounted adjacent each corner of the machine; and these'rollers' are mounted in a screw and sleeve mechanism operable to permit said rollers to be lowered for the purpose oflele vating the machine sumciently to raise the flanges to the lifting devices at that end of the machine through a transverse shaft I I2 and beveled gears H3 and 'I I4, respectively..

A tank combining fuel and water compartments and respectively necessary for the operation of the internal combustion engine M may be mounted on the frame of the machine adjacent one end thereof and. the customary water cooling radiator I23 is mounted adjacent the forward end of said engine M.

In operation of the device and supposing that the machine has arrived at a location along the track where grinding of the rails is necessary, the direction control mechanism is in neutral position and the clutch A has been disengaged, clutch B having been disengaged previously during movement of the machine along the track. Clutch B is engaged and one of the planetary gears 20 is meshed with the drive gear l3 by turning handle 30a to complete the connection from the motor M to the grinding mechanism, the speed of reciprocation of which may be changed by operation of the clutch 9 and change speed lever 8.

Upon completion of the grinding operation or if an approaching train necessitates rapid removal of the machine from the locus operandi, the direction control is neutralized by turning handle 30a, and clutch B disengaged. Clutch A is then engaged by throwing lever 60 and one of the gears 20 meshed with the driving gear l3 by turning the handle 30a to complete the driving connection from the motor M to the axle 4 to propel the machine along the track. It should be particularly noticed that that planetary gear 20 should be meshed with the gear I3 which will propel the machine in the desired direction along the track at the various speeds which may be selected by operation of the shift lever 8, permitting the machine to get away rapidly at high speed by changing from low, through second to high speed ratio of the transmission.

While the preferred embodiment of the invention has been set forth for the purposes of description, it is intended that certain changes and modifications may be incorporated from time to time within the scope of the annexed claims.

What is claimed is:

1. In a machine, the combination with a motor including a variable speed transmission and a clutch operatively associated therewith, of a driving gear driven thereby, a transverse shaft adjacent said driving gear, a sleeve slidably mounted on said transverse shaft and arranged for rotation therewith, spaced gears secured to said sleeve and arranged for selective engagement with the driving gear, means intermediate said gears slidably engaging the sleeve, eccentric means engaging the last mentioned means, means eccentrically engaging said eccentric means to actuate the same and the sleeve whereby one of the gears may be meshed with the driving gear, and cam controlled means operatively associated with the actuating means to disengage the clutch during operation of said actuating means.

2. In a machine, the combination with a motor including a clutch operatively associated therewith, of a driving gear driven thereby, a shaft adjacent said driving gear, a sleeve slidably mounted on said transverse shaft and arranged for rotation therewith, gears secured to said sleeve and arranged for selective engagement with the driving gear, means slidably engaging the sleeve, eccentric means engaging the last mentioned means, means eccentrically engaging said eccentric means to actuate the same and the sleeve whereby one of the gears may be meshed with the driving gear, and cam controlled means operatively associated with the actuating means to disengage the clutch during operation of said actuating means.

HENRY J. PERAZZOLI.