US83668A - peters - Google Patents

Description

iujd time WILLIAM SMITH, OF ALLGHENY CITY, PENNSYLVANIA.

Latem' Patent No. 83,668, ma Novanta 3, 1868.

IMPROVEMENT IN PIPE-MOULDIN G- MACHINE.

The Schedule referred to in these Letters Patent and making part of the same.

.To all V'whom 'it nul/y conce/rn.:

Beit known that I, WILLIAM SMITH, of Allegheny Oity, in the county of Allegheny, and State of Pennsylvania, have invented certain new and useful Improvements in Machines for Moulding Cast-Iron Pipe, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, which make part of this specification, and in which- Figure 1 represents an end elevation of my improved pipe-mouldng machine, lthe flask and carriage being shown in section;

Figure 2, a view in elevation of the same, taken from the opposite end;

Figure 3, a side elevation of the same;

dFig'ure 4, a similar' view, taken from the opposite s1 e;

Figure 5, a horizontal section of the same;

Figure 6, a view, in perspective, of the shaft by which the movement of the carriage is reversed; and

Figure 7 a plan view, on. an enlarged scale, of a portion of the mechanism, showing the arrangement of the counter-shafts C and D.,

My invention relates to Athat class of pipe-moulding l bearings on a sliding carriage, which moves vertically in grooves or waysin an upright frame, at or nearthe top of which is mounted the driving-shaft.

Motion is communicated from the driving-shaft to a counter-shaft, upon which are two loose pulleys connected with pulleys on the driving-shaft by straight and crossed belts, respectively,v either pulley of the counter-shaft being made fast thereon, and caused to revolve therewith, at pleasure, by an arrangement hereinafter to be described, so that the counter-shaft will revolve in thesame or a contrary direction to the driving-shaft, according as one or the other pulley of the former is made fast thereon.

The counter-shaft is connected 'by gearingwith a secondr counter-shaft, which carries pinions which engage-racks upon the sliding carriage, and thereby impart vertical motion thereto, fixed stops being secured upon the carriage, which throw the pulley ofthe first counter-shaftf out of operation, ateach .extremity of the travel of the carriage, by causing the former to be loose upon its shaft, and thereby stop the machine at these points.

VA horizontal counter-shaft, carryinga spur-pinion upon one end, and a bevel-pinion upon the other, is mounted in bearings on the carriage.

The spur-pinion of this shaft gears with a rack secured upon the upright stationary frame, land the bevel-pinion with a similar bevel-pinion upon the packer-shaft, rotary motion being thereby imparted to the latter during the upward and downward motions of the carriage.

Ihe flask, which is borne upon a car running on rails at the basev of the apparatus, is held thereon by means of pivoted clamps, having friction-rollers upon their free ends, which iction-rollers press upon a ange at the bottom of the flask, said flange resting within a ch'cular flange upon the carriage, the carriage being held in position by a bent spring attached thereto, which enters a slot in a stationary rest or standard secured to the basel of the machine. s

In the accompanying drawings, which show a con- Venient arrangement of parts for carrying out the objects of my invention, A A represent a stationary vertical frame, to which the mechanism is attached. In this instance, the frame is shown as erected upon a base-plate, A', but in practice it is usually set up in a pit, to the floor of which the top of the base-plate corresponds, andrthe depth of which is about equal to the distance between the door and the top of the flask. A driving-shaft, A", 4upon which pulleys, A4 A5, are keyed or otherwise secured, is mounted in bearings-at or near the top of the frame A, and a counter-shaft, O, is likewise mounted in bearings thereon, some distance below it. The counter-shaft G carries two loose pulleys, G C2, which are prevented from moving endwise by collars, C5 C, secured upon the shaft, and by shoulders thereon.

which is placed between the pulleys C* and G2, and can be moved longitudinally upon a feather formed on the shaft, but not rotated independently thereof.

A groove is formed all round the periphery of the clutch C, and slots'are made in each of its ends.

Pins or keys, G3 G4, are inserted into and project from the inner sides of the pulleys GI O2, toward the clutch, in such manner that when the latter is moved along the counter-shaft into suiiciently close proximity to either of the pulleys, the pins thereof engage the slots upon the adjacent side ofthe clutch, and the pulley'is thereby rendered fast upon the shaft.

When the clutch is thrown into connection with the pulley G2, the counter-shaft will rotate inthe same direction as .the driving-shaft by means of the straight belt C1, and when thrown into connection with the pulley C, it will rotate in a contrary direction by means of the crossed belt GS.

The clutch is shifted, when necessary, by means of a yoke, E, upon a horizontal shaft, E, mounted in bearings upon the frame, which yoke enters the groove in the clutch, and moves the latter in either direction, according to the movement of a shipper, E2, pivoted to the ame, and having its upper end suitably donnected with the shaft E, so as to move the latter longitudinally in its bearings.

The counter-shaft C likewise carries a clutch, Cd,

' The shaft E is likewise provided with a horizontal arm, Ex, the object of which will be hereinafter de-y scribed.`

The counter-shaft O carries a spur-pinion, 0, upon one of its ends, which gears with a similar pinion, D", secured upon a second counter-shaft, D, rotatnginA 'engage racks, G3 Gi, upon the carriage, and thereby impart upward or downward motion thereto, according to the direction of rotation of the counter-shaft.

A catch, G, is secured to the upper portion of the carriage G, and another catch, G, to the lower portion, the working-faces of each being inclined planes, and set `in such position that when the carriage has reached the lower extremity of its travel, the inclined face of the catch G strikes the yoke Ee, and throws the clutch (lcl out of connection with that pulley of' the counter-shaft C with which it may at the time be operating, and thereby stops the carriage. At the upper extremity of its travel, the carriage is stopped in a similar manner by the face of the catch G striking the arm-lil* of the shaft E.

A horizontal counter-shaft, H, is mounted in bearings upon the carriage G, having secured upon one of its ends a bevel-pinion, H2, which gears with a similar pinion, H3, upon the packer-shaft I, and a spur-pinion, H1, upon its oppositel end, which gears with a rack, A, upon .the frame A.

' By this means rotation is imparted to the packershaft during the upward and downward movements of the carriage.

J represents a cylindrical packer secured to the lower end of the packer-shaft, and having its upper portion made in the form of a frustum of a cone, with lnukes, J5, running spirally around it.

The flask B, of ordinary construction, is borne upon a car, K, running upon rails, B", upon the base-plate` A, or, in practice, upon the door of the pit.

The ask B rests within a circular flange upon the car and is held firmly in position for packing by means of clamps, L2, pivoted to the car, and having frictionrollers upon their free ends, which, when-turned into position, press upon a ange at the bottom of the ask, and hold it firmly down upon the car. The latter is held inposition, while the s'and is being packed in the liask, by a bent spring, O, secured to its top, which passes through an opening in a vertical standard, N', upon the base-plate, and holds the carin connection therewith, releasing it when raised.

A rest, M, is attached to the top of the standard N' by a set-screw, N, passing through a slot, M', in the. rest. The latter has an angular opening in its end, against the sides of which the upper portion of the flask rests, and, by means of the slot M and setscrew N, its position can be regulated to suit the diameter of the flask employed.

The operation of the machine is as follows:

The carriage G being a't the upper end of its path or travel, the flask B is placed upon thevcar K, and fastened thereon by the clamps L2. rIhe car is then pushed along the rails Bl until the flask stands beneath the packer-shaft, and concentric therewith, in which position it is fastened by the bent spring O and standard` N the upper part of the flask resting in the opening ofthe rest M. 'Ihe clutch C is then thrown into connection withthe pulley G, and motion imparted to the drivin g-shaft in the direction of the ar rows, which being communicated to the mungi- G through the counter-shafts C D, pinions Cc D Dl D2, and racks Gr3 (P, as hereinhefore described, the carriage moves downward until the packer J rra hes the bottom of the liask B, when the catch G strikes the yoke Ee, and, throwing the clutch l.)d out oi" connection with the pulley C, stops the movement of the counter-shaft, and consequently that of the carriage. A suilicient quantity of sand being then put into the flask B, the clutch Gd is thrown into connection with the pulley G2 by means of the shipper E2.

The carriage Gr then commences its upward motion, the packer-shaft being rotated by means of the pinions H2 H3 H, and rack A, as before described. This oper- K ation continues until the packer has been raised clear of the flask, when the catch G strikes the arm E* of the shaft E, and again stops the carriage.

During the upward and rotary motion of the packer,

its linkes, Jj, wedge the sand above them against the inside of the ask, while the lower cylindrical part of the packer` smooths the sand upon the inside of the mould.

When the packer is raised clear of the iiask, the oar is released from the standard N', and pushed away, to, allow of the removal of the flask, after which another can be clamped upon it, and the operation repeated.

I do not claim packing the sand in a flask by means ,of the rotation and upward movement of a packer, nor

the particular form ofpacker employed, such improvements being comprehended in Letters Patent granted to me, October 15, 1867, and numbered 69,854; neither do I broadly claim the use of a vertically-moving carriage, nor avlurtch engaging pins upon the sides of loose pulleys, as such devices have been heretofore known and used; but having thus fully described my invention,

What I claim therein as new, and desire to secure by Letters Patent, is

l. A packer-shaft, mounted in bearings on a vertically-moving carriage, arranged and operating so as to communicate rotation to the packer-shaft during its vertical movements, substantially in the manner described.

2. The carriage G and racks G G, in combination 'with the pinions D) D2, counter-shafts D C, gear-wheel Dd, pinion C, loose pulleys C* C2, clutch D, and drivingshaft A", arranged and operating substantially as described, and for the purposes set forth.

y 3. The pivoted clamps L2, having friction-rollers upon their ends, in combinationwith the carKand flask B, as

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