US329060A - lovett - Google Patents

Description

(No Model.) 2 Sheets-Sheet 1.

' J. S. H. LOVETT.

POTTERY PRESS.

No. 329,060. Patented Oct. 27, 1885.

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' POTTERY PRESS.

No. 329,060, Patented, out. 27,1885.

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UNITED STATES PATENT OFFICE.,

JOSEPH S. H. LOVETT, OF TRENTON, NEW JERSEY.

POTTERY-PRESS.

SPECIFICATION forming part of Letters Patent No. 329,060, dated October 27, 1885.

(No model.)

To all whom it may concern:

Be it known that l, JOSEPH S. II. Lovnrr, of the city of Trenton, county of Mercer, State of New Jersey, have inventedA a certain` new and useful Improvement in Pottery-Presses, of which the following is a specification.

The object of my invention is to provide a press which can be operated by a belt running from any ordinary shafting in a factory, and by means of the continuons motion imparted by such belt to secure a heavy pressure of the die upon the article to be pressed,such die, with its attendant mechanism, being capable of a sudden retraction as soon as the articleis formed.

The machinery by which I accomplish these objects is shown in the accompanying drawings.

In these drawings similar parts are indicated by similar letters of reference.

Figure 1 shows a front view of my machine. Fig. 2 shows a side view of the same. Fig. 3 shows a section at x w of` Fig. 2. Fig. 4 is a side view in detail of the pressing part of the machine, omitting, for the sake of clearness, some of the details shown in the other drawings; and Fig. 5 shows details in side view of such pressing parts omitted to be shown in Fig. 4.

In Fig. 1,A is the base of the machine. In this base, at the opening A', (indicated by the dotted lines,) is an opening, in which is placed va lower die operated by any appropriate means. As this die and its means of operation are old features in presses, I have not shown them in the drawings. From the base A rise the posts or frame B B. To these posts are attached the slides B. Sliding freely up and down these slides B by grooves in its ends is the head-block G. From this head-block rises standards C G', firmly attached thereto and connected at the top by the cross-piece C. Near the top of the posts B is placed a shaft, D, turning freely in journals attached to the posts. Upon this shaft is placed an eccentric, E. This eccentric is connected by means of collar E and arm E with the cross-piece C. A side view of this eccentric, collar, and arm is shown at Fig. 5. At the end of the shaftD is placed the balance-lever F. It will be seen that toraise or lower the lever F will raise or lower the head-block C, with all the machinery it carries. From the head-block O rises other standards, H. Side views of these standards are shown at Figs. 4 and 5. These standards H carry another shaft, I. (Shown at Fig. 4.) Upon this shaft I is an eccentric, K. This eccentricis provided with the collar K and col lar-armK. Thiscollanarm is connected with the plunger L, which passes through asquare opening in the head-block C. At the base of this plunger, as indicated by the dotted lines, is a recess to receive theupper die. Upon the shaft I is firmly fixed a gear-wheel, M. This gear-wheel meshes into the endless screw N. (Shown behind the standard B in Fig. 1, and shown more clearly in Fig. 2.) This endless screw moves freely up and down on a shaft, O, but is compelled to turn with the shaft O because of a feather, O', upon the shaft, which feather fits into a corresponding cut in the screw. A transverse section of the screw showing suchvcut is shown at Fig. 3. To the upper part of the shaft O are attached the variable speed-pulleys l?, around which the band from the shafting passes when the Inachine is in action. i

The operation of the machine is as follows: Upon power being applied to the pulleys P the shaft O rotates, carrying with it the screw N. This screw rotates the wheel M, shaft I, and eccentric K. The rotation of the eccentric K carries down the plunger L, and the plate or other article to be pressed, placed between the dies I and A', receives a strong pressure. As soon as the pressure is completed,the lever F is raised, carrying upward with it the blank C, plunger L, and all their attendant machinery, and the screw N slides upward on the shaft O, carried by the arm G.

To make my machine more perfectly auto-` matic, I have provided it further with the mechanism shown more fully at Fig. 2. To the bottom of the shaft O, I attach a gearwheel, It, which meshes into another gearwheel, S. This wheel S moves freely upon a pivot on top of the support T. Upon the top of the gear-wheel S is placed a cam, S. Upon the top of this cam is placed asmall wheel, U, moving freely in the end of the pitman W.

'This pitman connects with a spur-wheel, X,

which meshes with another spurwheel, Y, fixed firmly to the shaft D.

In operation the rotation of the shaft O carries with it the wheel R. The wheel Brotates the wheel S. 'Ihe cam S', carried by the wheel S, is so adj usted that the moment the dies have exerted their full pressure the; rotation of the cam raises the pitman WV, rotates the wheels X and Y, the shaft D, and eccentric E, and thus raises the block 0, plunger L, and attendant machinery.

In addition to the advantages already inentioned which I secure by my machinery, I secure a slow continuous downward pressure, thus more perfectly excluding the air from the clay composing the article formed, and I also secure a rapid retraction of the pressing parts the moment the pressing is completed, thus economizing time and securing a more rapid working of the machine.

What I claim as my invention is- 1. The head-block C, with standards H, in combination with the shaft I, provided with the eccentric K and plunger L, substantially as Shown and described.

2. The head-block C, with standards C and cross-piece C", in combination with the eccentric, E, arranged and combined substantially as shown and described.l Y

3. The head-block G, with its standards H H and C' G', in combination with the eccentric K, the plunger L, connected with such eccentric, and the eccentric E, connected with the standards C' C', all substantially as shown and described.

shaft D, and balance-lever F, substantially as shown and described.

6. The shaft O, provided with the feather O', and carrying the screw N, in combination with the gear-wheel R and S, cam S', arm W, gear-Wheels X and Y, and shaft D, substantially as shown and described. Y

7. The shaft O, provided with pulleys P, carrying the screw N and having the gearwheel It, in combination with the wheel S, cam S', arm W provided withwheel U, wheels X and Y, and shaft D, and with the gear-wheel M, shaft I, eccentric K, collar K', collar-arm K", and plunger L.

8. The shaft O, provided with pulleys P, carrying the screw N and having the gearwheel R, in combination with the wheel S, cam S', arm W, provided with wheel U, wheels X and Y, and shaft D, carrying the eccentric E, connected by collar E and collar-arm E" with cross-piece C", and gear-wheel M, shaft I, ec-

centric K, collar K', collar-arm K", and plunger L, all substantially as shown and described.

JOSEPH s. H. LovErT.

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