US1149448A - Core-making device. - Google Patents

Description

Uw [d 3 3 W. JOHNSTON &'C. ROMER.

CORE MAKING DEVICE.

APPLICATION FILED ocT.9. 1914.

Patented Aug. 10, 1915.

SHINCITQN. DA c.

coLUMBIA WILLIAM JOHNSTON AND CHARLES HQROMER, or DAYTON, oHIo.

CORE-MAKING DEVICE.

Specification of Letters Patent.A p Patented Aug, 10, 19u15.

Application filed october o, 1914. serial No. 865,864.

T0 all whom'it may concern.'

Be it known that we, VILLIAM JOHNSTON and CHARLES H; ROMER, citizens of the United States, residing at Dayton, in the county of Montgomery and State of Ohio, have invented certain new and useful Improvements in Core-Making Devices, of which the following is a specification.

This invention relates to new and useful improvements in core making devices.

The principal object of our invention is to provide a simple, cheap and eilicient device for makinga plurality of cores in approximately the time it takes to produce one. Not only is it possible to make a large number of cores with our improved device,- but the mechanism of the latter may be` readily set to produce cores of a desired size, the latter being properly vented by penetrating means of anv equally .unique` proved core-making device. Fig. 2 is a side` elevation of the device, kshowing the same in readiness to make several cores. Fig. 3 is a detail view of a portion of the device, showing in particular one function of the locking means. Fig. 4 is a sectional view of a portion of the device, showing one of the vent rods after it has been forced through a plunger and core-making barrel. Fig. 5 is a perspective view of oneof the locking devices. Fig. 6 is an elevational view of a cylinder for setting the mechanism of the device to a position to make cores of a desired size, and Fig. 7 is a sectional view tak-en through the device shown in Fig. 2 along the longitudinal axis of the left-hand rod which extends below the core barrels, and at right angles to the plane of the paper. j

Throughout the specification and drawings, similar reference characters denote corresponding parts.

1n a detailed description of our invention, 1 designates a longitudinal member preferably constructed of metal. Extending through the middle portion of the member 1, and firmly secured therein, is a plurality of core barrels or cylinders 2, preferably of similar size and shape and disposed in parallel relationL to each other. Rigidly secured to, and projectingupwardly from the longitudinal member 1, one on each side of the longitudinal row-of core barrels 2, are rods 3 which loosely pass through bores in a longitudinal member 4 similar to the longitudinal member 1. The upper ends of the rods 3 extend loosely through vertical cylinders 5 whose lower ends fit tightly within the bores through which the rods 3 loosely pass. Surrounding the lower portions of the rods 3, are coil springs 6, the lower ends of which rest on the longitudinal member 1 while the upper ends thereof extend loosely into the. cylinders 5 and engage shoulder portions 6a in the latter. By means of these springs 6 the longitudinal members 1 and 4 are normally held apart. (See Figs. 2 and 3).

Passing through the longitudinal member 4,l and firmly secured therein by means of screws 7, are the stems 8 of plungers 9. These plungers are so disposed above the core barrels 2 that they will enter and occupy different positions in the latter when the longitudinal member 1 is moved toward the longitudinal member 4. The plungers 9 and stems-8 thereof are cast hollow to permit vent rods 10 to loosely pass therethrough into the core barrels 2. These vent rods 10 firmly depend from a bar 11, eachy end of which'is bored out Vto Vloosely receive a cylinder 5. Surrounding the cylinders 5, between the longitudinal member 4 and bar 11, are coil springs 12 which normally hold the bar 11 a suflicient distance above the member 4 to keep the vent rods 10 above the lower ends of the plungers 9. However, the bar 11 may be depressed against the tension of the springs 12, to force the vent rods 10 completely through said plungers for a purpose to be hereinafter explained. (See Fig. 4.)

When the longitudinalmember 1 is in its lowermost position with reference to the member 4, the rods 3 will proj ect a suiiicient distance above their respective cylinders 5 to receive removable collars 13. The collars 13 and rods 3 are so constructed that when the former are placed in a certain position on the latter, a bore will extend throughV both to receive a pin 15 by means 0f which the collars. 13 maybe irmlysec'ure'd to said rods.

Adapted to be readily slipped on the rods 3, between the collars 13 and cylinders 5, are sleeves or cylinders 16 of different lengths for a purpose to be hereinafter described. When in position 4on the rods 3, these sleeves 16 will rest upon the flanged portions 17 ofthe cylinders 5, said anged portions also serving to limit the movement of the bar 11 when the latter is forced upwardly by the springs`12. (See Figs. 1, 2 and 6.)

For the purpose of supporting the device in an upright position, the following construction is provided: Projecting from, and integral with the longitudinal member 4f, one on each side of the lower end of the left hand cylinder 5, are bosses 18. Similar bosses 19 project from the longitudinal member il opposite the lower end of the right hand cylinder Secured in a vertical bore in each one of the bosses 18, by means of a counter-sunk screw 20, is a rod 21 which eX- tends downwardly a slight distance below the lower ends of the core barrels 2. A` similar rod 22 is secured in a vertical bore in each one of the bosses 19, by means of a countersunk screw 23; the rods 21 forming with the rods 22, four legs upon which the device is supported in an upright position. Each pair of these legs is spaced a suicient distance apart to permit the longitudinal member 1 to be readily moved up and down between them. y

By means of the following construction, the longitudinal member 1 may be locked in an adjusted position, or, in other words, its movement may be limited in either direction with reference to the longitudinal member 4: Provided on two of the rods 21 and 22 which are on the same side of the longitudinal member 1, are collars 24 adjustable on said rods by means of screws 25. Each collar 2-1 has a cylindrical extension 26 which also slides over the rods 21 and 22 and to the lower end of which is rigidly secured a cap 27 after said extension loosely passes through an aperture 28 in a latch 29. Each latch 29 has a tongue portion 30 adapted to be turned into the path of the longitudinal member 1 by an upright arm 31 integral with the other end of said latch (see Figs. 4land By unloosening the screws 25, the collars 21 may be moved along the rods 21 and 22 to a position thereon in which it is desired to turn the tongue portion 30 of the latch 29 into the path of the longitudinal member 1 during either its upward or downward movement. In Fig. 2 the tongue portion 30 is in a position which( limits the upward movement of the member 1, while in Fig. 3 it is shown in a position which limits the downward movement of said member. The longitudinal member 1 has concavel recessed portions 32 and 33 to permit it to readily pass the collars 24 during its upward and downward movement.

In operation, the ends of the longitudinal members 1 and 4 are firmly gripped by the hands of the operator, and the member 1 moved toward the member t. When the member 1 has been drawn upwardly a desired' distance, the collars 24 may be moved along the rods 21 and 22 to a position in which the tongue portions 39 of the latches 29 may be forced below the member 1 to hold it in its elevated position against the tension of the springs 6. (See F ig. 3). By withdrawing the pins 14C, the collars 13 may then be removed from the upper ends of the rods 3 to permit a cylinder 16 of the desired length to be slipped on the upper end of each of said rods, after which the collars 13 may again be pinned to the rods 3 above the cylinders 16. As the cylinders 16 rest upon the cylinders 5, they will form a barrier to the downward movement of the collars 13, andl as the latter are pinned to the rods 3 which are attached to the member 1, said member will be held in an elevated position by said cylinders 16. The tongue portions 30 of the latches 29 may now be moved from under the member 1, as the only function of'said levers in this instance is to hold said member in an elevated position until thecylinders 16 can be inserted or removed. Since the core barrels 2 are attached to the member 1 and the plungers 9 to the member d by which the cylinders 5 are supported, it will now be observed that the length of the cylinders 16 will determine the distance the member 1 dare' not go below the member 4t, or the highest position of the plungers 9 in the core barrels 2. rlhus it is possible by means of the cylinders 16, to so set the plungers 9 within the core barrels 2 as to produce cores of a desired length. l/Vhen the plungers 9 have been so set, the collars 2st are moved along the rods 21 and 22 to a position in which the tongue portions 30 of the latches 29 may be moved into Contact with the upper surface of the member 1, as shown in F ig. 2. rllhe device is then firmly grasped by the hands and the core barrels 2 thrust down one or more times upon the wet sand, whereupon the latter will be forced tightly into said barrels against the plungers 9 to form cores 3/1. The force of the impact ofthe core barrels 2 upon the wet sand will not move the member 1 upwardly beyond its set position, because such a movement will be restrained by the tongue portions 30 of the latches 29. After the cores have been formed in the barrels 2, the bar 11 is forced downwardly by the hand or hands, to push the rods 10 through the plungers 9 and into the cores 34' a desired distance for the purpose of forming vent holes in the latter. after which said bar will be returned to its CTX Linien/ia normal position by the springs 12. `(See Figs. 2 and 4f). To remove the cores 34, the tongue portions 30 of the latches 29 are moved out of the path of the member 1 and the latter elevated, whereupon the plungers 9 will torce said cores out of the lower ends of the barrels 2.

lt will now be seen that by the use of our improved device, a plurality of cores may be made quickly and eiiiciently, and properly vented and removed.

Wvo do not wish to be limited to the details of construction and arrangement herein shown and described, and any changes or alterations may be made therein to suit different conditions of use.

Having described our invention, we claim:

l. A core-making device comprising a plurality of hollow members, plungers movable in said members, coinpressible means for varying the positions of the plungers in said members, and means :tor locking said compressible means in an adjusted position, substantially as described.

2. A core-making device comprising a plurality oi"- hollow members, plungers movable in said members, compressible means for collectively varying the positions of the plungers in said members, penetra-ting .devices, and means for forcing said devices through the plunger-s to produce vent holes in the cores, substantially as described.

3. A core-making device comprising a plurality of hollow members, plungers movable in said members, compressible means for varying the positions of the plungers in said members, means for locking said compressible means in an adjusted position, penetrating devices, and means for collectively torcing said devices through the plungei's to produce vent holes in the cores, substantially as described.

fi. A core-making device comprising hollow members arranged in longitudinal alinement, plungers movable in said members, compressible means for varying the positions of said plungers in their respective hollow members, devices for locking said compressible means in an adjusted position, rods adapted to loosely pass through said plungers, and means for collectively forcing said rods through the plungers to produce vent holes in the cores, substantially as described.

A core-making device comprising a plurality of barrels, plungers movable in said barrels, a longitudinal member to which said barrels are secured in vertical alinement with each other, another longitudinal member supporting said plungers insimilar alinement, upright members adapted to guide said longitudinal members during a movement toward and away from each other to vary the positions of said plungers in their respective hollow members, and a device for limiting themovement of said barrel supporting member in either direction, substantially as described.

6. A core-making device comprising a plurality of barrels, plungers movable in said barrels, a longitudinal member to which said barrels are secured in vertical alinement with each other, another longitudinal member supporting said plungers above said barrels, upright members adapted to guide said longitudinal members during a movement toward and away from each other to vary the positions ot said plungers in their respective hollow members, and detachable means carried by said upright members to limit the movement of said barrel-supporting member from the plunger-supporting member, substantially as described.

7. A core making device comprising a plurality of barrels, plungers movable in said barrels, a longitudinal member to which said barrels are secured in vertical alinement, another longitudinal member supporting said plungers above said barrels, upright members carried by the barrel-supporting member passing loosely through the plunger-supporting member, caps on the tops ot said upright members above the plunger-supporting member, and means insertible between said caps and the latter member to limit the movement of the barrelsupporting member from said plunger-supporting member, substantially as described.

8. A core-making device comprising a plurality of barrels, plungers movable in said barrels, a longitudinal member to which said barrels are secured in vertical alinement, another longitudinal member supporting said plungers above said barrels, rods carried by the barrel-supporting member passing loosely through the plunger-supporting member, removable caps carried by the tops of said rods above the plunger-supporting member, and cylinders insertible on said rods between said caps and the latter member to limit the movement of the barrelsupporting member from said plunger-supporting member, substantially as described.

9. A core-making device comprising a plurality of barrels, plungersmovable in said barrels, a longitudinal member from which said barrels depend, another longitudinal member supporting said plungers above said barrels, rods secured to the barrelsupporting member passing loosely through the plunger supporting member, cylinders mounted on said last named member through which said rods also pass, caps removably mounted on said rods above said cylinders, and sleeves adapted to be inserted on said rods between the caps and cylinders to limit the movement of the barrelsupporting member away from the plungersupporting member, substantially as described.

plurality of barrels, plungers movable in` said barrels, a longitudinal member from which said barrels depend, another longitudinal member supporting said plungers above said barrels, rods secured to the barrel-supporting member passing loosely through the plunger supporting member, coil springs encircling said rods between said members to hold them normally apart, cylinders mounted on said last named member through which said rods also pass, removable collars secured to said rods above said cylinders, and sleeves adapted to be inserted on said rods between the caps and cylinders to limit the movement of the barrel-supporting member away from the plunger-supporting member, substantially as described. e

11. A core-making device comprising a plurality of barrels, plungers movable in said barrels, a longitudinal member from which said barrels depend, another longi tudinal member supporting said plungers above said barrels, rods secured to the barrel-supporting member passing loosely through the plunger-supporting member, to guide the latter during a movement toward or away romthe plunger-supporting member, and adjustable latching means carried by said last named member to limit the movement of said barrel-supporting member in either direction, substantially as described.

12. A core-making device comprising a plurality of barrels, plungers movable in said barrels, a longitudinal member from which said barrels depend, another longitudinal member supporting said plungers above said barrels, rods secured to the barrel-supporting member, passing loosely through the plunger-supporting member to guide the latter during its movement toward the plunger-supporting member, bosses projecting from one side of said last named member, rods projecting downwardly from said bosses, collars adjustably movable on said rods, and latches pivotally carried by said collars to engage the upper or lower surface of said barrel-supporting member, substantially as described.

1.3. A core-making device comprising a plurality of barrels, hollow vplungers movable in said barrels, a longitudinal member from which said barrels depend, another longitudinal member supporting said plun gers above said barrels, rods secured to the barrel-supporting member, passing loosely through the plunger-supporting member, cylinders mounted on said last named memberthrough which said rods also pass, rods adapted to pass through said hollow plungers into their respective `core barrels, and means guided by said cylinders for collectively forcing said last named rods through said plungers, substantially as described.

14. A eoremaking device comprising a plurality of barrels, hollow plungers movable in said barrels, a longitudinal member from which said barrels depend, another longitudinal member supporting said plungers above said barrels, rods secured to the barrel-supporting member, passing loosely through the plunger-supporting member, to guide the latter during its movement toward the plunger-supporting member, upright guides secured to said last named member, i bar having a vertical movement directed by said guides, and a plurality of rods depending .from said bar and adapted to be forced by the latter through the hollow plungers, substantially as described.

l5. A core-making device comprising a plurality oi barrels, hollow plungers movable in said barrels, a longitudinal member from which said barrels depend, another longitudinal member supporting said plungers 'above said barrels, rods secured to the barrel-supporting member, passing loosely through the plungersupporting member, cylinders mounted on said last named member through which said rods also pass, a bar having end por ions vertically slidable upon said cylinders, a plurality of rods depending ifrom said bar and adapted to be forced by the latter through said hollow plungers, and coil springs encircling said. cylinders between said bar and the plungersupporting member, to normally hold said rods above the lower ends of said plungers, substantially as described.

ln testimony whereof we have hereunto set our'hands, TVILLIMI JOHNSTON the 28th day of September, 1914i, and CHARLES H. Rosina the 5th 'day of October, 1914.

VLLAM JOHNSTON. CHARLES H. ROMER.

`Witnesses for Villiam Johnston:

M. D. BAKER, ELSIE M. LINDAI-IL.

Witnesses for Charles H. Romer:

ERNEST T. Hoeren, HOWARD S. SMITH.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

6 Washington, D. C.

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