US618178A

US618178A - Randolph p

Info

Publication number: US618178A
Authority: US
Publication date: 1899-01-24
Anticipated expiration: 1916-01-24

Description

No. 6I8,I78A Patented Jan. 24, |899. H. P. LIPPINCOTT.

GLASS PRESS.

(Application filed Aug. 24, 189B.)

(No Model.)

WITNESSES 1 INVENTOR fm @a www MW JMMQM www BY fmw on. Dv c. we wams PETERS oo., Puoroumo wsumar llNiTE STATES PATENT OFFICE.

RANDOLPH P. LIPPINCOTT, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO SALMON B. ROIVLEY, OF SAME PLACE.

GLASS-PRESS.

SPECIFICATION forming part of Letters Patent No. 618,178, dated January 24, 1899.

Application filed August 24, 1898. Serial No. 689,370. (N model.)

To @ZZ whom it may concern:

Be it known that I, RANDOLPH P. LIPPIN- COTT, a citizen of the United States, residing at Philadelphia, county of Philadelphia, and

State of Pennsylvania, have invented a new and useful Improvement in Glass-Presses, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, which form a part of zo this specification.

My invention relates particularly to that class of glass-presses in which the press or movable member is in two parts, the follower and the plunger, both of which have a movement downward until the follower takes its seat, and then the plunger has a further independent movement. In this type of machine there is a spring connection between the plunger and follower which is relied upon to maintain the follower in position. In practice I have found this has some defects in not always maintaining the follower in fixed position, and as the follower carries a part of the mold this is quite disadvantageous; and myinvention has for its object to prevent this occurring by locking the follower in its position and automatically locking and releasing the follower at the proper times. I accomplish this in the following manner, which is clearly illustrated in the accompanying drawings, in which- Figure l is a front view of the device. 2 is a side elevation of the device.

A is the table, carrying the fixed molds a of the press.

B is the follower, carrying a part of the movable mold, and C is the plunger, connected to the piston-rod c, which is operated from the cylinder D. I have shown this plunger operated by a piston-rod. It might be operated by a lever or in any manner, as the power to drive the piston forms no part of my invention. l; is the follower-plate, and c the plunger-plate, which surrounds the rods lf', and between which plate o and the followerplate l1 are the springs (l. rlhe plunger-plate c extends beyond the rods 712 and is provided at its ends with the pins E,which work in the slots e of the arms F, pivoted to the frame of themachine. One part of the slot-eis straight and the Fig.

remainder inclined. The arms F are of suflicient length so that when swung over they will be within the line of the follower and when the follower is down will rest over said follower. The means by which I move this lever is as follows: As before described, the slot e has a vertical and an inclined portion. The length of the vertical portion is equal to the length of travel of the follower and plunger together. As a consequence, in the downward movement of the plunger and follower together the arms F are held outward. IVhen the plunger moves downward alone, the follower beingin its ultirnate position, the pins E meet the inclined portion of slots e and the arms F swing over above the follower-plate and hold it in position. On the return movement, the iirst movemeut of the plunger upward, through the medium of pins E, acting on the inclined p0rtion of the slots c, the arms F are pushed outward free from the follower-plate, so that when the time for the upward movement of the follower-plate is reached it is free to move upward.

Having now fully described myinvention, what I claim, and desire to protect by Letters Patent, is

l. In a glass-pressing machine, in combination with the plunger and follower, the plunger having a movement with, and a movement independent of the follower, of a swinging arm, there being a slot in said arm, one portion of which is inclined, a pin moving in said slot, and connection between said pin and said plunger, the pin traveling in the inclined portion of the slot during the independent movement of the plunger.

2. In a glass-pressing machine, the combination with the plunger and follower, the plunger having a movement with and a movement independent of the follower, of a swinging arm normally out of alinement with the follower, and a connection between said plunger and arm adapted in the independent movement of the plunger to swing said arm into alinementvwith the follower for the purpose specified.

3. In a glass-pressing machine, the combination with the plunger and follower,the plunger having a movement with and amovement IOC),

independent of the follower, of means for positively looking the follower during the independent movement of the plunger.

I. In a glass-pressing machine, the combination with the plunger and follower adapted to move downwardly to press the glass and then upwardly, the plunger having in both directions a movement with and a movement independent of the follower, and means for 1o positively locking the follower during the invdependent downward movement1 of the plunger and for releasing the follower during the upward movement of the plunger.

In testimony of which invention I have hereunto set my hand, at Philadelphia, on this 10th day of August, 1898.

RANDOLPH P. LIPPINCOTT.

IVitnesses:

FRANK S. BUssER, M. FRANCES ELLIS.