US1288192A

US1288192A - Clutch.

Info

Publication number: US1288192A
Application number: US19695017A
Authority: US
Inventors: Fred A Read; Elisha J Towle
Original assignee: Individual
Current assignee: Individual
Priority date: 1917-10-16
Filing date: 1917-10-16
Publication date: 1918-12-17
Anticipated expiration: 1935-12-17

Description

F. A HEAD & 5. 1. TOWLE.

CLUTCH.

APPLlCATiON HLED OCT. 16. 1912;

1,288, 18%,- Patented D6017, 1918. v

2 SHEETSSHEET l- 1215 J. Ewl,

F. A. READ & E. J. TOWLE. CLUTCH.

APPLICATION FILED 001.15.1917.

Patented Dec. 17, 1918.

2 SHEETS-SHEET 2.

FRED A. READ AND ELISHA J. TOWLE, F LYNN, MASSACHUSETTS.

CLUTCH.

Application filed October 16, 1917.

To (ZZZ whom it may concern:

Be it known that we, FRED A. READ and lEnrsim J. Towns, citizens of the United States of America, and residents of Lynn, in the county of Essex and the State of Massachusetts, have invented certain new and useful improvements in Clutches, of which the following is a specification.

This invention relates to driving mechanisms for machines and particularly to devices of this character in which a motor is connected directly to the main driving shaft of the machine.

The object the present invention is to provide means between the motor and the machine of a quickly acting connector whereby the machine may be driven at full speed from the motor as soon as the connection is made.

The invention consists of an electro-magnet secured to the driving shaft of the machine and adapted when energized to coact with a slidable member keyed to the motor shaft thereby providing means whereby power may be transmitted from the motor to the machine.

The machine further consists in providing means whereby the machine may be quickly disconnected from the motor Without affecting the speed of the latter.

The invention further consists of certain novel features of construction and arrangement of parts which will be fully understood by reference to the description of the drawingsand to the claims to be hereinafter given. I

For the purpose of illustrating the invention one preferred form thereof is illustrated in the drawings this form having been i found to give satisfactory and reliable results although it is to be understood that the various instrumentalities of which the in; vention consists can be variously arranged and organized and that the invention is not limited to the precise arrangement and organization of the instrumentalities as herein shown and described, except as required by the scope of the appended claims.

"Of the drawings:

Figure 1 represents an elevation partly in section of a device embodying the principles of the present Qinvention.

Fig. 2 represents a vertical section on line 2 on Fig. 1.

3 represents a VfilLlCfli. section on line 3. 3 on Fig. 1.

Specification of Letters Patent.

Patented Dec. 17, 1918.

Serial No. 196,950.

Fig. 4 represents a vertical section on line 1, a on Fig. 1, and

Fig. 5 represents an elevation of the switch for controlling the operation of the electromagnetic clutch mechanism between the motor and the machine.

Similar characters designate like parts throughout the several figures of the drawmgs.

In the drawings, is a portion of the frame of a machine provided with a hub 11 and having revolubly mounted in said hub a shaft 12, from which power is supplied to drive the operating parts of the machine. As the various operating parts of the machine form no part of the present invention they are not illustrated.

To the frame 10 is secured a bracket 13, in the outer end of which is mounted an electric motor 1 1. As this motor 1 1 may be of any well known construction it is not considered necessary to illustrate its construction. The motor 14 is provided with the driving shaft 15 in alinement with the shaft 12 to be driven.

Mounted upon the driving shaft 15 is a sleeve 16 secured to said shaft 15 by a set screw 17 so as to cause said sleeve 16 to revolve with the shaft 15. Mounted upon the sleeve 16 and secured thereto by means of the set screw 17 is a collar 18, having an annular flange 19. in which are mounted a plurality of parallel pins 20, extending through openings in a clutch member 21, slidably mounted upon the sleeve 16.

The pins 20 extend through the openings in the slidable clutch member 21, permitting this member 21 to be reciprocated on the sleeve 16, while insuring its rotation with said sleeve.

The clutch member 21 is provided with an outwardly extending annular flange, the inner wall of which is inclined and adapted to fit the tapered periphery of an annular ring 22, secured to the hub 23 of a spool 24 of insulating material.

This spool is mounted upon a sleeve 25 secured to the driven shaft 12. The outer end of the sleeve 25 is provided with an annular flange 27, the inner wall of which is adapted to fit over the periphery of the hub 28 when the clutch member 21 is moved longitudinally of the sleeve 16.

\ l/Vithin the bore of the sleeve25 is positioned one end of an intermediate member 29 the opposite end of which is positioned bridge 46 adapted complete circuit through with a layer 31 of within the bore of the sleeve 16, the ends of said intermediate member 29 hearing respectively against the ends of the driven shaft 12 and the driving shaft 15.

This intermediate member 29 insures the alinement of the

shafts

12 and 15 at all times.

Upon the spool 2 1 is mounted a coil 30 of wire, the windings of which are insulated from each other in any well known manner, and the outer layer of said coil being wound paper or some similar material.

Upon the periphery of the spool 24: and coil 30 is mounted a hand wheel 32 by which the shaft 1'2 may be rotated by hand when desired. The outer end 33 of the coil of wire is connected to the ring 3% and the end of said coil is connected to the ring 36. These rings and 36 are secured to the spool '24: by means of the screws 3'4".

The bracket 13 is provided with an upwardly extendingear 38'to which is secured an insulating disk 39, having secured to its outer face the contact plates d0, a1, and

Secured to the contact plate 40 is a brush #13, the free end of which. is adapted to en gage the ring 36.

The contact plate 42 has secured thereto a brush 4.1, the free end of which engages the ring 3%. Pivotally mounted upon the disk 39 is an operating lever e13, carrying to connect the contact plates 41 and i2 when said operating lever is in the position shown in Fig. 5. When the lever to moved into the position shown in Fig. 4. the bridge 416 will be entirely in contact with the plate l1 and the circuit will be broken.

T he rear end of the operating lever is rovided with a projection 47 adapted to abut the stop pin 48 when the device is in operation and to abut a stop pin fol) when the circuit is broken.

The plate &0 is connected by a wire 50 with a binding post 51 on the motor 1% and the plate 11 is similarly connected by a wire 52 with a binding post 53 on said motor 14:.

These

wires

50 and 52 continue beyond the binding posts 51 and 53 to a suitable source of electric energy, as the battery 5%, shown in diagram in Fig. at of the drawings.

Between the source of electrical energy 5% and the motor 1% is a switch 55 by which the motor 1% may be thrown into or out of action. When the motor is in operation the operator may throw the operating lever d5 into position shown in Fig. and make a the coil 30, thus magnetizing the sleeve or core 25, and thereby drawing the slidable clutch member 21 into engagement with the tapered periphery of the ring 22.

As long as the electric current passes through the coil 30 the

clutch members

21 and 22 will be retained in firm contact with each other and the machine shaft 12 will be driven from the motor 1& by means ofthe driving shaft 15.

The movement of the operating lever 15 to complete the circuit through the electric magnet will cause the immediate movement of the slidable clutch member '21 into contact with the ring 22, so that the shaft 12 will be immediately rotated at the same speed as that of the motor shaft- 15.

By moving the shaft 45 into the position shown in Fig. i the circuit to the electric magnet 30 will be broken and the clutch members 21 and will become separated thereby permitting the shaft 15 and the electric motor 1 1: to revolve at full speed without transmitting movement to the driven shaft 19.. This shaft 12 may be brought to a full stop by the operator using the hand wheel lVith the lever 45 in the position shown in Fig. 4, the operator may rotate the shaft by means of the hand wheel makes a very quick acting clutch, particularly desirable for machines to be driven 'ithout variation in speed. By the use of this magnetic clutch a motor may be connected in alinement with the machine shaft, and drive the main shaft of the machine On sewing machines and the like the cur rent may be secured from the ordinary electric light sockets, By connecting the motor directly to the machine as shown and described herein the shafts, counter shafts, pulleys, and belts, usually used to operate machinery of this class would be entirely dispensed with.

We believe that the many advantages and the operation of the invention will be fully understood without any further description.

Having thus described our invention, we claim:

1. In a device of the class described. two alined shafts; means for driving one shaft; two clutch members, one on each shaft; a member interposed between said shafts and alined therewith, having positioned in sockets axially disposed relatively to said clutch members; and magnetic means on the driven shaft for moving one of said clutch members into coacting relation with the other.

2. In a device of the class described, two alined shafts; means for driving one shaft; two clutch members, one on each shaft; :1 revoluble member interposed between said shafts and alined therewith; and magnetic means on the driven shaft for moving one of said members into coacting relation with the other.

3. in a device of the class described, a driving shaft; a driven shaft; a sleeve se- This the ends thereof I messes cured .to said driven-shaft; an electromagnet secured to-said sleeve; a clutch member secured to said magnet; means for controlling the operation of said electro-magnet; a hand Wheel surrounding the electro-magnet whereby the rotation of the driven shaft may be manually stopped when the clutch members have beendisengaged; and a slidable clutch member onsaid driving shaft adapted to be moved by said magn'et into coasting rela tion with said magnet clutch.

' said sleeve; a clutch member secured to said magnet; means for controllmg the operation 4:. In a device of the class described, a driving shaft; a driven shaft; a sleeve secured to said driven shaft and having an annular flange; an electromagnet secured to of said electro magnet; and a slidable clutch member on said driving shaft adapted to be moved by said magnet into coacting relation with said magnet clutch, and having a hub adapted to fit Within said annular flange.

5. In a device-of the class described-,a-

driving shaft; a driven shaft; a sleeve secured to said driven shaft; a member of insulating material revoluble with said sleeve and provided with two peripheral flanges; a wire coil on said memberbetween said flanges; a source of electric energy; a switch betweensaid source and said coil; a tapered ring secured to the hub of said flanged meinher; and a slidable member -on the driving shaft having an annular flange adaptedto be drawn into contact with the periphery of p 35 said ring whenever said coil is energized. 6. In a device of the class described, a

driving shaft; a driven shaft; a sleeve secared to said dnven-shaft; an electromagnet inclosed in a member of insulating material secured to said sleeve; an annular clutch member secured to said magnetv inclosing member and having a conical periphery; means for controlling the opera- I tion of said electro-magnet; and a slidable clutch member on said driving shaft adapted to be moved by said magnet into coasting relation with said magnet clutch, and having Y a flange provided with an inner wall'adapted to coact with the periphery of said annular member. I

7. In a device of the class described, a

driving shaft; a driven shaft; a flanged member of insulating material revoluble' with said driven shaft; a Wire coil on said flanged member; a source of electric energy;

a switch between said source-and saidcoil;

her; and a slidable member on the driving shaft having an annular flange adapted to be'drawn into contact with the periphery of said ring whenever said coil is energized.

- 8. In a device .of the class described, a

driving shaft; a driven shaft; a sleeve secured to said driven shaft and having an annular flange; an electromagnet mclosed in a member of insulating material secured to I said sleeve; a clutch member secured to said magnet inclosing material, and having a con ical periphery; a sleeve on the driving shaft; a slidable clutch member on the driving shaft sleeve provided with a hub adapted to fit Within said annular flange'and having a projecting flange adapte'd'to coact with, the conical periphery of the other clutch member; and means for controlling the operation of said electromagnet. Signed by us at 4 Post ()fiice 801., Boston, Mass, this 13th day of October, 1917.

i I FRED A. READ.

v ELISHA J. TOWLE.

' Witnesses; i

v WALTER E. LoMBARn, NATHAN 0-. Measure.