US842042A - Speed-regulator. - Google Patents

Description

No. 842,042. PATENT'ED JAN. 22, 1907.-

P! WEBER.

SPEED REGULATOR.

APPLICATION FILED SEPT.2'I, 1905.

In ventor: Q2; 77-W features hereinafter set forth and claimed.

1 UNITED STATES PATENT OFFICE.

PETER WEBER, OF ORANGE, NEW JERSEY, ASSIGNOR TO NEW JERSEY PATENT COMPANY, OF WEST ORANGE, NEW JERSEY, A CORPORA- TION OF NEW JERSEY.

SPEED-REGULATOR.

Specification of Letters Patent.

Patented Jan. 22, 1907.

I0 a. whom 2Z2- may concern:

Be it knownthat I, PETER WEBER, a citizen of the United States, residing at Orange,

in the county of Essex and State of New 5 Jersey, have invented certain-new and useful Improvements in Speed-Regulators, of which the following is a specification.

My invention relates to devices for regulating the speed of motors, and. more particu- I l l I i y i larly spring-motors, such are used for driving the movmg parts of phonographs and similar talking-machines, and my invenf tion has for its object the provision of a regulator which will be simple and reliable in operation, which will be of few parts, which I will be capable of regulating the motor to E any desired speed, and preferably will indi- 1 cate certain definite speeds at which the; motor is running. v

To this end my invention consists in the Reference is hereby made to the accompanying drawings, in which Figure 1. is a vertical section taken through I the bed-plate of a. phonograph and showing I the governor-shaft of the motor and one} form of my invention applied thereto. Fig. l 2 is a section on line 2 2 of Fig. 2. Figs. 3 l and 5 are opposite face views, and Fig. 4 a side view, of the regulating-cam of Big. 1. Figs. 6 and 7 are face and side views of a modified form of regulating-cam.

Corresponding parts are indicated by the same reference-numerals in the several views.

A spring-motor of any suitable type is carried by a motor-frame .1, secured to the bedplate 2, and is provided with theusual governor-shaft 3, by which the speed of the motor may be regulated. This shaft may be journaled in the motor-frame and bedplate, as shown. The governor comprises the usual sliding disk 4. operated by the centrifugal governor weights 5, carried by springs 6, secured at one end to the collar 7, fixed to the shaft 5, and at the other end to the sleeve 8, slidable upon said shaft and carrying the disk 4. I provide a lever 9, which is pivoted at its lower end upon a screw 10, threaded in a boss 11, which may be integral with the body 2, The lever 9. carries afriction-piece 1.2, of felt or other suitable material, adapted to bear against the face of the disk 4, and thereby control 1 the speed of the motor, it being obvious that when the lever 9 is moved sufliciently far to the left, Fig. 1, the motor may be brought to rest, and that as the lever is moved toward the right the motor willbe caused to run at any desired speed Withinthe limits within which the motor is designed to run. The position of the lever 9 is, cont-rolled by means of a rod 13, having ahead 1- This rod passes loosely through the lever 9 and body 2. The outer end of the rod 13 1S threaded, as shown at 15, and a regulatingcam 16, having a milled head 17 for convenience in turning, engages said thread. The can: 16 is rigidly secured to the rod 13 in any suitable manner, as by a set-screw 18, passing through the hub 19 of the cam. The cam-surface consists of a crown 16 of varying depth. This surface is pressed against an abutment, such as. .a pin 20, rigid with. the body 2 by a coil-spring 20, surrounding the rod 13 and hearing at one end against the body 2 and at the other against the lever 9, whereby the lever 9 is held against the head 14 and the position of the rod 13, leverQ, and friction-block 12 is determine The cam-surface comprises a series of steps. The portion 21 is flush with the head 17, and when the portion is in engagement with the pin 20 the rod' 13 and lever 9 are'drawn farthest to the left, and the motor is unable to operate. This position of'the lever 9 is determined experiment-ally at the time the cam 16 is applied to the thread-15, and the cam is secured in such a position upon the rod 13 that the motor will be stopped when the lowest portion of the cam-surface bears against-- the pin 20. As the cam 16 is revolved the pin 20 bears against the crown 16 and forces the cam and rod 13 toward the right against the pressure of the spring 20". A level step 22 is then engaged by the pin 20, the height ofwhich permits a definite motor speed, which may be such as will produce ninety revolutions per minute of the phonographmandrel'. Upon turning the cam further another step 23 is reached which may correspond to one hundred and sixty-revolutions of the mandrel per minute. This is the highest point of the cam-surface, since it is not desirable that the mandrel should rotate at a higher speed than one hundred and sixty-rev-- IOO olutions. From this point the height of the cam uniformly' decl-ines until the bottom step 21 is reached. One may obtain any desired speed be ween zero and one hundred and and an index-mark 25 may be applied to the body 2 to cooperate with said numerals; Thus when the pin 20 presses against the portion 2] of the earn the numeral 0 will be opposite the index-mark 25. When the pin 20 presses against the step 22, the numeral 90 will be opposite the indicator 25, and when the pin 20 presses against the step 23 the numeral 160 will be opposite the said indicator. This point is usually about one hundred and eighty degrees from the zeropoint. The cam of Figs. 6 and 7 is provided with a surface 26 of varying height extending about half-way around and terminating at each end in an abrupt shoulder 27, which acts as a stop for the pin 20 and prevents further turning of the cam. The cam will be so placed upon the pin 13 that when the lowest portion of the surface 26 abuts against the pin 20 the motor is at rest. Any desired speed can then be obtained by rotation of the cam untilthe highestpoint of the surface 26 is reached.

Having now described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. In a speed-regulator, the combination of the governor-shaft and disk slidable thereon, a frictionpiece for engaging said disk and means for varying the position of said frictionpiece comprising an axially-movable cam, a fixed abutment and a spring for pressing said cam against said abutment, substantially as set forth.

2. In a speed-regulator, the combination of the governor-shaft and disk slidable thereon, a friction-piece for engaging said. disk and means for varying the position of said friction-piece comprising an axially-movable cam having a stepped face, a fixed pin and a spring for pressing the face of said. cam against said pin, substantially as set forth.

3. In a speed-regulator, the combination of a governor-shaftand disk slidable thereon, a lever carrying a friction-piece for engaging said disk, a spring-pressed rod pivoted to said lever for varying the position thereof and a stepped cam secured to said. rod for determining the position of said rod, substantially PETER l/VEBER.

Witnesses:

DELOS HOLDEN, FRANK L. DYER

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