US2170535A

US2170535A - Movement rest for watches

Info

Publication number: US2170535A
Application number: US167206A
Authority: US
Inventors: Cleve G Marsden
Original assignee: Individual
Current assignee: Individual
Priority date: 1937-10-04
Filing date: 1937-10-04
Publication date: 1939-08-22
Anticipated expiration: 1956-08-22

Description

Aug. 22, 1939. Q MARS'DN 2,170,535

MOVEMENT REST FOR WATCHES Filed Oct. 4, 1937 Patented Aug. 22, 1939 UNITED STATES PATENT oFFlca MOVEMENT REST FOR WATCHES Cleve G. Marsden, Portland, Oreg.V Application October 4, 1937, Serial No. 167,206

Z Claims.

The object of my invention is to provide a movement rest for watch repair work which is substantially universal in its application 'to various sizes and shapes of watch movements. A further 5 and more particular object of my invention is to provide a movement rest of this character which is adjustable so as to engage securely vand hold a movement therein with the parts of said movement rest arranged'to be clear of the operl ating parts of said Watch movement, and to permit said parts to be readily accessible for repair and replacement.

One of the difliculties in watch repair Work at the present time is that Watches are made in l a large number of sizes and shapes, and great diiculty is experienced, particularly in the smaller sizes and the irregular shapes, in providing some means for holding said movement securely and conveniently so that the moving parts thereof can be operated upon conveniently. Various types of spring-actuated clamps have been devised which accommodate several sizes of watch movements, `and they are secured to such watch movements by yielding pressure. They are impractical, however, in that the means for holding the watch movement does not securely hold the movement so that Work can be done thereon.

The greatest diiliculty, however, is that it has been deemed necessary to provide a number of movement rests comparable to the number. of sizes and shapes of Watches operated upon. Such large number of movement rests thus involves a problem of storage, selection and maintenance, as Well as initial cost.

By providing a movement rest which is universal in accommodating various sizes and shapes of watches and which holds all of them securely and conveniently, a great 'advantage is secured.

Further details and features of my invention 40 are hereinafter described, with reference to the accompanying drawing in which.'

Fig. 1 is a plan view of a movement rest embodying my invention, shown supporting and engaging a relatively large-sized round movement;

Fig. 2 is a larger scale perspective view of a movement rest embodying my inveniton;

Fig. 3 is a view o'f a movement rest embodying my invention, supporting and engaging a movement of irregular shape;

Fig. 4 is a view of said movement rest env gaging a relatively small elliptical movement, and illustrates the manner in which said movement rest is adjustable to accommodate said various sizes and shapes of movements;

Fig. 5 is a longitudinal section taken along the center line of a movement rest embodying myr invention and thru the lead screw for adjusting the heads thereof to accommodate watches of various sizes and shapes, and illustrates further the manner in which the projecting pin portions 5 engage and overlie the flanged lrim in which a watch movement is housed;

Fig. 6 is a fragmentary detail View of one of the engaging pins to show its inclination with respect to the work supporting surface of said movement rest, and its notched engaging face;

Fig. 'l' is a plan view of a modification of my invention in which the work engaging members are cast or formed integrally with the work engaging head, a portion of one member being 15 shown4 broken away in this gure to illustrate details of construction;

Fig. 8 is a fragmentary section taken on the line 8-8 in Fig. 9; and

Fig. 9 is a longitudinallview thru one of the 20 engaging members.

A movement rest embodying my invention comprises a pair of head elements a and b which are adjustable towards and from each other by a lead screw c. two set collars c-c2, which lie at opposite sides of the head element a. Thev set collar c .is preferably formed as an integral portion of said v screw, While the set collarc2 is threaded upon the threaded stem c3 of said screw. A boss b' is 30 formed upon the head element b, and thru said boss, tapping extends which engages with the threaded portion c3 of said lead screw. Said boss provides an additional length of threading v than could otherwise be secured if the head was 35 of uniform thickness. The end of said lead screw is provided with a knurled cap c4 for rotating the lead screw and moving the heads toward and from each other along guide rods c5.

The upper surfaces a. and b2 of the heads con- 40 stitute supporting surfaces for a watch movement d. Referring to Fig. l, it can be noted that if the movement rest is arranged in a horizontal plane that a Watch movement can be arranged so that diametrically opposite portions lie upon 45 said work supporting surfaces of the head elements, respectively. Extending upwardly from said Work supporting surfaces are two pairs of pins e. Said pins constitute work engaging elements and are adapted to engage the lowermost 50 lateral ange d with which watch movements are substantially uniformly provided.

Said pins are arranged in pairs, one pair being arranged on each head element, and said pins are more or less allned with each other and the 55 Said lead screw is provided with 25 pairs are likewise alined. Said pins on each head are arranged so that they lie on opposite sides of a longitudinal center line extending thru said movement rest, and are adapted to accommodate various types of watch movements, as is illustrated in Figs. 1, 3 and 4. In Fig. 3, a relatively small watch'movement f is provided with a periphery comprising two opposite curved portions and two opposed plane portions. The pins are arranged to grip the watch movement between-them, and said movement rest can be adjusted so as to accommodate a watch movement g as small as is shown in Fig. 4.

As is shown in Figs. 5 and 6, said pins are arranged so as to be inclined obliquely to the surfaces a! and b2, andthe inclination of said pins. is toward the space lying between'said head elements a and b, so as to overlie the lateral ange of a watch movement held therein. Said pins preferably are under-cut and notched, as at e', so that the flange will be inserted in said notches, and the unnotched portion will overlie the flange and tend to prevent the watch movement from being lifted upwardly from the'pins when the movement is arranged, substantially as is shown in Fig. 5. Said lateral anges on watch move ments vary slightly in thickness, but the difference in the gauge of metal used is only a variance in extremely small fractions of an inch and thus said pins are notched to receive the thickest gauge metals and said notch does not interpose much play when smaller movements, with thinner flanges, are gripped in said movement rest.

Because of the fact that four upstanding pins are provided to engage the movement rest, said gripping elements are adapted to accommodate almost any shape of movement. Said movements are possibly more frequently round but they are also of irregular shapes, square, hexagonal, octagonal, elliptical, and many other variations from said standard geometric gures. Y

In Figs. 1 to 6, inclusive, I illustrate how said upstanding pins e can be made as separate pieces from the head. Said pins can be press-fitted into said heads or may be screw fitted or otherwise mounted therein. In Figs. 7 to 9, inclusive, I illustrate how projecting pins or studs can be cast or otherwise formed directly upon the head. In Fig. '7, two heads h andi are mounted for relative movement upon a. lead screw a'. Guide rods j', functioning similarly to guide rods c5 in the previous embodiment, tend to hold the heads in substantial parallelism with each other. Upon the work supporting surfaces h' and i', upstanding bosses lc are formed. Said bosses can either be formed by relieving the remainder of the heads surrounding said bosses to Acause said bosses to project above said relieved portions, or said bosses can beformed by casting said bosses integrally With'said head.

Said bosses are illustrated in Figs. 8 and 9 to show a notched portion k and under-cut inclined portions k2 overlying said notched portion. The

inclined portions It extend obliquely to the plane of the surfaces h' and i', somewhat to the same degree as the inclination of the pins e, and for the same purpose. Because it is desirable to make said bosses substantially of larger cross-section than the pins e in the previous modication, I preferably arrange the inner face of the notched portion k' as well 'as the face of the under-cut inclined portions k2 so as to be substantially rounded as atl in Fig. 8. Thus, the bosses are adapted to accommodate plane or curved surfaces with equal facility.

When a movement is held in said rest and is gripped between the pins or bosses, it is securelyl held by the tightening of the lead screw. Said movement can be shifted readily over a work bench and will be spaced above the surface of said bench. YThe movement does not become loosened relatively, and when engaged, is held against displacement therefrom. When thus held, substantial pressure can be exerted against the movement,` as when moving a corroded screw, and substantially the entire face of the movement is available to be operated upon Without restriction.

I claim:

1. A movement rest for watch repair work, said device comprising a pair of clamping heads adapted for holding a watch movement, means for moving vsaid heads towards and from each other, said means including a. threaded stem, guide means for maintaining said heads in substantial parallelism with each otherLone face of each of said heads constituting a work supporting surface, and a pair of alined projecting work engaging pins. extending upwardly from each of said surfaces, said pins being spaced apart and lying at opposite sides of the center line of each head, said pins having work engaging .notches formed upon their inner ends ush with said work supporting faces.

2. A movement rest for watch repair work, said device comprising a pair of clamping heads adapted for holding a watch movement, positively actuated means for moving said heads towards and from each other, said means including a threaded stem journalled -irl/oneVV of said heads and screw threaded in the other, guide means for maintaining said heads in substantial parallelism with each other, one face of each of said heads constituting a. work supporting surface, and a pair of alined projecting work engaging pins extending upwardlyfrom each of said surfaces, said pins being spaced apart and lying at opposite sides of the center line of each head, said pairs of pins also being in substantial alinement with each other, said pairs of pins extending obliquely from said surfaces, the outermost ends of each pair of pins being inclined towards the other pair of pins, said pins having work engaging notches formed upon their inner ends adjacent said work supporting faces.

CLEVE G. MARSDEN.