US553221A - Staking-machine - Google Patents

Description

(.No Model.)

. 2 Sheets-Sheet 1.V vD. H. CHURCH.

I l STAKING MACHINE. No. 553,221.

Patented Jan. 14

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UNiTnn STATES DUANE i1I. CHURCH, OF NEVTON, MASSACHUSETTS;

STAKING'VIACHINE.

SPECIFICATION forming part of Letters Patent No. 553,221, dated January 14, 1896.

"Application led July Z0, 1895. Serial No. 556,559. (No model.)

To all whom it may concern:

Be it known that I, DUANE H. CHURCH, of Newton, in the county of Middlesex and State of Massachusetts, have invented certain new and useful Improvements inQStaking-Machines,of which the following is a specification.

This invention has for its object to provide an improved staking-machine, so called, adapted to secure watch-movement wheels to pinion-staffs; and it consists in the improvements which I will now proceed to describe and claim., reference being had to the accompanying drawings, of which- Figure 1 represents a front elevatibn of a staking-machine embodying my improvements. Fig. 2 represents a side elevation of Fig. 3 represents a vertical transverse section on the line 33, Fig. 1. Fig. 4 represents a section on line 4 4, Fig. i Fig. 5 represents a section on line 5 5, Fig. l. Fig. G represents a section on line G 6, Fig. 3. Figs. 7, 8, and 9 represent enlarged sectional views of the portions of the machine which perform diversely on the work, different relative positions assumed being shown in diierent views. Fig. lOl shows an enlarged section of parts appearing in Fig. 3 between dotted lines 7 7.

The same letters of reference indicate the same parts in all the gures.

In the drawings, a designates a stationary cylinder provided with pistons Z) c'which are normally held central of `the cylinder by springs CZ e, the spring d being 'somewhat lighter than the spring e, for a purpose hereinafter explained;

To the upper piston b is suitably secured a sleeve or hollow rod f extending .through the cylinder and engaging the end of a lever g pivoted at h to a standard i formed upon the cylinder-head k. The outer-end of said' lever g engages -a plunger Z fitted to move longitudii nallyin a sleeve m secured to the cylinder; i

'i into the sleeve or rodf,`ftl1elarrangement be-` The lower `piston o is securedto'arod-f'a having an enlarged portion o upon'whichthe under side 'of said `piston `rests, while fthe smaller portion of the rodextends upwardly ing such that the pistons are centrallyguided in the 'cylinder and `prevented -from binding therein.' f" .'H

The lower end o of piston-rod n rests upon an arm 2J pivoted at p4 yto a block q. (See Fig. 0.) Said block is adjustably secured in a recess o' formed in a downwardlyprojecting portion of the cylinder. A screw s engages the upper portion t of the block q and is operated by a hand-wheel afto adjust .the arm p for a purpose pointed out hereinafter. The free end of the arm prests upon a lever fr pivoted at w to a standardfy formed` upon the under side of the cylinder. The outer end of said lever bears upon a plunger a incased in a'sleeveV b and is `adapted to be moved longitudinally by saidlever 2:,which is so arranged as to be moved independently ofthe piston c by the operator through a rod c attached thereto and a treadle d' attached to the rod c. j y

` The pistons are moved in the cylinder preferably by means ofcompressed4 air which enters the cylinder from a supply-pipe e through a passage or port f formed in the cylindershell, the opening of said passage being midway of the pistons, Fig. Il, so that the pistons may be moved in opposite directions to operate the levers u g and their adjunct-s.

The entranceof the air to the cylinder is controlled by f'valve g' of any suitable construction. The one `here shown is pistonshaped and iitted to slide in a bushing h, secured in a projection i", formed on the cylinder a. Said valve is provided with a passage j' and has a recess k' formed in one end, `and scribed, in which -thefeinhaust-openi'ng Z' reg` isters witlrtle passage' f ,f being held `'in said positionbyaspringmi, one en'd of whichbears upon a bracket n: attachedA to the lunder yside.

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ofthe .eylinde'riagqwhile thezother end bears against aco'llai" o-fseeure'd `to a rod p', whichrod issecured tothe' valve g-at one end, the i l, other end passing througlr the bracketfa andA having a knob or pull q' attached thereto.

-yielding pressure is applied, the purposeof `nient for the latter and holding it in position (See Fig. 2.) A

The lever g engages at its outer end with a` cap r fitted upon the plunger Z, which has an enlarged portion s closely iitting the sleeve m and adapted to slide therein. The lower portion t of the plunger is reduced in diameterv and is surrounded by a sleeve u, the upper end of which bears against a spring o', Fig. l0, the upper end of which rests against a collar w loosely surrounding the reduced por-. tion of the plunger Z, thlsleeve being heldinv position vertically by a pin e', secured to the plunger Z, and projecting through'a slot a2 in the sleeve m, as will be more clearly understood by reference to Fig. 10. "A spring b2 has one end bearing against the enlarged portion s' of the plunger l and the other resting upon a sleeve c2, the lower end of which bea rs upon a head d2 secured to the sleeve u', the arrangement being such that when the plunll ger is operated downwardly a dierential which will be explained later in the operation. The plunger Z is bored to receive a set or staker e2, preferably formed in sections to prevent binding or springing in the bore, as would bethe case were one piece used. 'The upper end of the bore is screw-threaded and a screw f2 inserted therein, the lower end of whichv bears against the upper end of the staker or .set e2, providing means of adjustagainst presspre.

The arm p' is adjustable upon the lever v in the direction of its length by means of the screw s and block q, so that the degree of pressure exerted by the piston -c upon said lever maybe varied to suit diferent classes of work; and to accurately adjust the leverage I have provided an indicator h2, Which is attached to the vsliding block q, as shown ein Fig. (i, the outer end registering with 'a scale i? upon the outside of the machine. 4

'An adj usting-screwj2 is also shown to limit the downward movement of lever 3;, and theA latter at its outer or shorterend bears against a cap 7a2, the upper portion of which has a socket which receives the lower end of plunger e', adapted to move vertically in a bushing Z2, fitted to the lower portion of socket b.

The upper portion of said plunger is reduced '1n diameter and is surrounded by a spiral spring m2, the lower end of which bears again st the enlarged portion of the plunger, and the upper end bears against the upper end of the socket. The object of said spi-ing is to normally sustain' the lever u and arm j) in contact with the lower end of the rod o by means .0f pressure exerted upon the plunger c', as will be readily understood by reference to Fig. The plunger c' is also provided with a-set n2 in the same manner as the plunger s', the upper end o2 of which. projects above said plunger, Fig. 3, which is surrounded by a bushing o3, to which bushing is iitted'a cap o4. li avin g a central opening o15 corresponding to the conical end of the set o2. Said cap is also tted with a depression or counterbore o5 to receive 'a wheel o6 of a Watch for the purpose of inserting the. staff into the same.

The ends of the sets are provided with sockets o9 010 for the receptionof the staff of the pinion o8 during the operation.

Operation: The operator depresses the treadle and draws down the longer end of the lever fe, which raises theshorter end of said lever and with it the plunger a until the conical 'end of the set engages the opening o15 in the cap ci, aS-Show'mn.- Fig. 7. .A pinion o8 is placed thereon, and on pressure from the treadle being removed the plunger resumes its normal position, as shown in Fig. 8, withl the pinion resting thereon. A wheel o6 is th en -placed upon the cap o4, and air is admitted into the cylinder by the operation of the valve already described, and the piston b is moved upwardly, which movement, through the lever g, depresses the plunger Z until the head.

Z2 rests upon the wheel, as shownin the lastmentioned figure. During the movement of piston b the piston c has remained inopera- `pleted, as before explained, with the result shown in Fig. 8, the movement of piston cnow takes place in a downward direction, depressing arm p and lever o, thereby raising plunger a,'with the pinion resting'the'reon, into the position shown in Fig. 9, in which position the projecting portionrf" of the staff is forced intothe center of the wheel, the head d2 yielding against the pressure of the springs e and b2 to permit the set e? to press directly upon the'stai and upset the same within the Wheel.

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Vhat -I claim as my invention is as follows 1. In a machinelof the character described, the combination of opposed plungers; mechanisms for advancing the same toward each other, said mechanisms actuated by an agent common to both; and restraining means, that applied to one of said lnechanisms being inferior to that applied to the other, whereby one plunger is caused to advance before the other, although impelled by. the same agent.

2. In a machine of the character described, the combination of opposed plungei's, a cylinder, a pair of pistons therein, means for admitting fiuid under. pressure between said pistons, and movement-reversing connections between 'the pistons and plungers respectively, whereby movement of the pistons away from each other advances the plunger-s toward eachother, the pluugers moving in an opposite direction to their respective pistons, substantially as described.

3. In a machine of the character described, the combination of a cylinder, a pair of pistons therein, means for admitting fluid under pressure between said pistons, springs resisting movement of said pistons by4 the iiuid IIO the combination of a cylinder, a pair of pis-.

to'ns in said cylinder, springs holding said pistons Ain the middle of the cylinder, `the spring applied to' one piston being stronger than that applied to the other, opposed plungers for acting on the work,and suitable connections between the plungers and the pistons.

`5. In a machine of the character described, the combination of opposed plungers to act on the work; and mechanism to advance the said plungers respectively and both actuated by a common agent, one ot' said mechanisms including a disconnected lever 4which while serving to transmit power from the said common agent to one plunger may be independently operated-to advance that plunger',- substantially as described.

G. In a machine of the character described,

the combination of a plunger for supporting the work, a lever engaged with said plunger,l

a second lever engaged With but disconnected from said rst lever and pivoted to a movable u support, means for adjusting said support to vary the point of engagement of the two 1evers, and means applied to the second lever for impelling it against the irst lever and thereby operating the plunger and a cooperating plunger and its actuating mechanism.

7. In a machine of the character described, the combination of an upper plunger, ahead surrounding the same, a yielding connection between said headand plunger, a lower plunger, an anvil with provision for receiving the latter, and means for actuating the plungers, with provisions for movement of the upper plunger with its surrounding head in advance of the lower plunger, for the purpose de scribed.

In testimony whereof I vhave signed my name to this specification, in the presence of two subscribing witnesses, this 5th day of July, A. D. 1895.

DITANE ll. CHURCH.

Witnesses:

A..D. HARRISON, W. P. AnELL.

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