US533212A - Combined jigger and pulldown - Google Patents

Description

(No Model.) 4 Sheets-Sheet I.

J.OROSSL EY. COMBINED JIGGER AND PULLDOWN.

No. 533,212. 4 Patented Jan 29, 1895.

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COMBINED JIGGER AND PULLDO'WN.

N0. 583,212. Patented Jan. 29, 1895.

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J. GROSSLEY. COMBINED JIGGEB AND PULLDOWN.

No. 533,212. Patented Jan, 29, 189.5.

illi"! Wm WM (No Modem 4 Sheets-Sheet 4. J. GROSSLEY. COMBINED JIGGER AND PULLDOWN.

Patented Jan. 29, 1895.

NQH I Q/QWn woow JOSEPH CROSSLEY, OF TRENTON, NEW JERSEY.

COMBINED JIGGER AND PULLDOWN.

SPECIFICATION forming part of Letters Patent No. 533,212, dated January 29, 1895.. Application filed August 11, 1894i. Serial No. 520,086. (No model.)

To all whom it may concern:

Be it known that I, J OSEPH CROSSLEY, a citizen of the United States, residing at Trenton, in the county of Mercer and State of New Jersey, have invented certain new and useful'lmprovements in a Combined Jigger and Pulldown and I do hereby declare the follow- 1ng to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My present invention relates to machinery formaking pottery ware and has especial reference to that class of machinery used for making plates, cups, saucers and other circular ware and has for its object certain improvements in the construction of a combined jigger and pull-down which will be fully disclosed in the following specification and claims.

In the accompanying drawings which form part of this specification Figure 1 represents a side elevation of my improved machine with the pull-down raised and the parts of the machine in their normal position or at rest; Fig.

- 2, a like view, with the pull-down lowered and all the parts in position when at work, and the casing and the operating shaft of the jigger in vertical longitudinal section; Fig. 3, a top plan view with the jigger-head removed; Fig. 4:, an enlarged section of the worm gear-wheel, showing its cam surface in one of its sides and the cam which operates the pull-down automatically; Fig. 5, a view taken on the line 00. 00. Fig. 1 looking in the direction of the arrow; Fig. 6, a vertical transverse section on the line y. Fig. 1, and Fig. 7, a detail perspec tive of the pull-down.

Reference being had to the drawings and the letters thereon A indicates a rectangular metallic case or box in which the operating mechanism of the jigger is inclosed and designed to be immersed in oil and is provided with a two part removable cover a separated at b, so that ready access may be had to the inclosed machinery for repairs or renewal of any of the parts.

B is the jigger, the spindle not which is provided with aconical journal 01 which rests in a hearing or step e which is vertically adj ustable in the pocket or extension f of the casing Aby means of a set screw g and is held against rotation by a screw it which extends through the wall of the casing and engages the bearing a.

O is the head of the jigger on which a plate or other article, or a bat for the plate is formed, and on the upper end of the spindle is a conical enlargements supported in a removable conical bearing 2' in the extensiont' of the front section of the cover a and is held in position by a set screw 75, and above the enlargement z is a conical extension Z which engages alike conical recess m in the under side of the jigger-head, as shown in Fig. 2. On the spindle c and near the lower end is a miter gear wheel n which meshes with a large gear wheel 0 secured to the main shaftp of the jigger, and on the shaftp is a worm g which is engaged by a worm wheel 0 on the supplemental shaft s. The shaft 19 is supported at each end in brackets t aattached directly to the bottom of the casing A, as shown in Figs. 1 and 2, and on the bracket t is a friction disk w which is engaged by a corresponding disk a which is connected to the collar of the gear wheel 0 and the two disks form a supplemental brake to arrest the momentum of the jigger after the molding of the bat or an article of pottery ware. The shaft 19 has a slight longitudinal motion and carries the disk a, with it, and said motion of the shaft is limited by a collar b on the shaft. The shaft 19 is also provided with a miter gear-wheel d on the rear side of which is a friction disk e and the two are secured to the shaftp by a pinf or by'any suitable means.

On the shaft 3 is a cam g which operates the pull-down or arm D which supports the bar It to which the sweep or profile o" is adjustably secured by bolts 7c which work in a slot Z in the bar, and the bar is adjustable in the head m by means of set screws a. The arm D is on one side of a circular disko', and on the opposite side of the disk is an arm 19 on which is an adjustable counter weight q to raise the arm D and the strike or profile 2" out of engagement with the piece being formed on the jigger-head O, and on one side of the disk 0 is a stud 7* which engages one arm 8 of a bifurcated lever whose other arms t a, respectively engage the cam g and the friction disk c. The stud r is provided with a friction roller o and the disk 0' is supported on a bracket to and secured to oscillate on the disk 00 thereof by a bolt y, as shown in Figs. 5 and 6 and the bifurcated leveris supported on a shaft a" 011 the bracket 10 and the arm 25' is provided with a friction wheel b to engage the cam g.

E is the main power shaft provided with a pulley c" and on the hub of the pulley is one half 61' of a clutch F, the other half 6 being movably supported on said shaft, and on the inner end of the shaft E is a miter gear wheel f which engages the gear wheel 01 and imparts motion to the shafts p and 8 through the medium of their respective gear wheels. The clutch F is thrown into engagement by an arm 9 attached to a longitudinally movable rod h supported in a bracket 2' secured to the cover a of the casing A as shown in Figs. 3 and 5, and is automatically thrown out of engagement by the cam Z" in one face of the worm gear wheel 0* with which the inner end of the rod it" engages and is moved outward as soon as the bat or article on the jiggerblock 0 is completed.

Asa means for operating the rod h" for throwing the clutch E into engagement a lever G is shown pivoted to a fulcrum m on the cover a in Fig. 3 and connected to the rod h" at n" and is designed to be operated by being pushed by the body of the operator.

In the operation of the machine as soon as the clutch F is thrown into engagement and the cam g revolves on its axis sufficiently to move the arm 25' out of engagement with the recess 0 the bifurcated lever by its arms 8' t pushes the Stud 1" back and the pull-down or arm D with its arm h and strike t" down upon the clay on the jigger-block G where the strikeis held until the circular portion of the cam has passed the arm 25 and its end again enters the recess 0", when the counter-weight q raises the arm D, applies the brake shoep" to the disk e and draws the disk 0, against the disk w and stops the jigger, when the hat or the article of pottery ware is removed from the jigger-head O and a new supply of clay placed thereon. At the instant the arm tenters the recess 0 in the cam g, the cam Z in the gear wheel r has shifted the rod h" and the arm g and thrown the clutch F out of engagement, when the brakes almostinstantly stop the momentum of the jigger.

It is obvious that the pull-down or arm D may be drawn down by hand and for this purpose a hole 2 is provided for a handle and good results obtained, but the automatic and mechanically operated pull-down is preferred as it to a great degree increases the efficiency of the machine and practically dispenses with the necessity of employing skilled labor for operating the machine. When operated by hand the down stroke of the arm D is limited by a set screw q" engaging a lug r on the rim 0'.

In practice two machines are placed side by side and a boy standing between the two forms the bats on one machine and removes the bat and places it on the mold of the jigger of the other machine where the article is struck up or molded, when the mold with the article on it is removed by another boy to the drying rack. The boy who stands between the two machines has control of the starting of both and pushes the shifting lever G of each machine alternately.

Having thus fully described my invention, what I claim is- 1. A jigger having a vertical spindle, a support for said spindle and a horizontal operating shaft inclosed in a casing, in combination with a pull-down supported on the cover of the casing.

2. A jigger having a vertical spindle, avertically adjustable bearing for said spindle, a horizontal operating shaft inclosed in a casing, and a removable cover for the casing, in combination with a pull-down supported by said cover.

3. The combination of a jigger, a pull-down and a brake operated by the pull-down.

4. A jigger and a longitudinally movable operating shaft provided with separable friction disks, in combination with suitable operating mechanism, and a pull-down.

5. A rectangular casing, in combination with a vertical spindle supported in a movable bearing and a horizontal shaft connected to the spindle and supported on brackets within the casing; and a pull-down supported on the cover of the casing.

6. A casing, a vertical jigger spindle supported in extensions of the casing on its bottom and top, in combination with an operating shaft within the casing and a pull-down supported on the cover.

7. A rectangular casing, provided with a removable cover, a jigger supported by the casing at one end and a pull-down supported on the cover, in combination with suitable operating mechanism.

8. The combination of a jigger, a horizontal operating shaft provided with a friction disk, an automatic pull-down and a brake operated by the pull-down.

9. A jigger and a pull-down in combination with a shaft supporting a worm gear, a shaft supporting a worm gear wheel and a cam and an arm engaging the cam to operate the pulldown and a brake operated by the pull-down.

10. A jigger in combination with a pulldown comprising a circular rim havinga head to support an arm and a strike on one side and a counter-Weight on the opposite side, and a projecting stud, a vibrating lever and a cam for operating the lever and a brake operated by the pull-down.

11. A jigger, in combination with a pulldown, clutch mechanism and a device for antomatically disengaging the clutch and a brake operated by the pull-down.

12. A jigger and an operating shaft provided with a worm gear, a worm gear wheel IIO engaging said worm gear and provided with a cam on one side, and a rod engaging the cam, in combination with a pull-down, and a clutch mechanism.

13. A jigger, an operating shaft provided with a friction disk, and a pull-down, in combination with a cam, a vibrating lever having an arm operated by the pull-down, an arm CLO engaging the friction disk and an arm engaging" the cam. 10

In testimony whereof I affix my signature in presence of two witnesses.

JOSEPH OROSSLEY. Witnesses:

G. K. CooMBs, F. F. WAnoHTER.

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