US1373948A - Jarring-machine - Google Patents

Description

C. F. BUENTE. 'JARRING MACHINE.

APPLICATION FILED SEPT. 10, 1919. 1,373, 948. Patented Apr. 5, 1921.

3 SHEETS-SHEET I.

C. F. BUENTE. JARRING. MACHINE. APPLICATIONIILED SEPT. 10. I919.

Patented Apr. 5, 19211.

3 SHEE]SSHEET 2.

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,JARRING MACHINE.

. APPLICATION FILED SEPT. 10, 1919. 1,373,9%8

l W a m a W m w 7 M m CHARLES F. BUENTE, 0F AVALQN, PENNSYLVANIA.

A nlication filed September 19 191:).

To (ZZZ whom it may concern Be i' Known that 1, CHARLES F. BUENTE, a citizen or the United States, residing at Avalon. Allegheny county, ?ennsylvania, have invented a new and useful improvement in Jarring-lliachines, of which the following is a full, clear, and :;act description, reference being had to the accompanying drawings, forming part of this specification.

The present invention relates to an improved jarring machine designed particularly for use in molding concrete articles.

The principal object of the invention is to A apparatus for forming articles of the above character in an economical and raoid manner and at the same time form an article by continually feeding the concrete in o the mold in superimposed layers, while sJj-ecting the mold to jarring, to form a solid article tree of spaces between the perthe concrete.

tner object of the present invention 0 g o ide a single means for rotating gting the mold. which means is etfor causing the mold to with substantially no rotary movement at the time ot impact.

Another object of the present invention is to provide a mold jarring apparatus which will compact the concrete uniformly throughout the entire mass thereof, so that an article is not produced having the outer surface thereof more compact than the remainder.

A still further object or" the present invention is to provide an apparatus for rapidly carrying out the process and by means of which the mold or molds are continuonsly rotated in front of a feeding de-.

vice and simultaneously jarred to settle the concrete in the mold.

The foregoing and other objects, together with their attendant advantages, will be apparent as the invention becomes better understood by reference to the accompanyspecification and drawings forming a part thereof. it being premised that changes may be made in the various details and the manner of operation within the scope of the appended claims without departing from the spirit of the invention.

Figure 1 is a plan view illustrating diagrammatically one form of apparatus for carrying out my invention.

2 is a horizontal sectional view on the line HII or" Fig. 3 showing one form of L. 4". w Specincatmn in. Letters Patent. sfaliel tigell A lin, 5, 13 21.

Serial No. 322,798.

apparatus for arring the mold and rotating it during the filling thereof.

F 1g. 3 a sectional view on the line of F 2 with the mold shown in in elevated position.

1g. a is a side elevation of one of the lifting and rotating members. T 1g. 5 is detail sectional view on the line i -V of Fig. l.

Fig. 6 is a side elevation, partiallv broke away. on the line VIVI of Fig. 5, and

Fig. 7 is a side elevation of the clutch mechanism for connecting the jarring; mechanism with the main driving shaft. 7

ihe compacting of the concrete takes place at the timeoi impact of the falling mold. In actual practice I have found that it the mold is rotating at the instant of impact, the outer portions of the concrete in thernold will be compacted more, due tothe action of centrifugal force. By the apparatus disclosed in the present application I am enabler to eliminate rotationot the mold the instant of impact, with the result tl the concrete is uniformly compacted throughout the mold. i

Referring more particularly to the draw- I have illustrated rotatable tables 2 lpivi -g suppo ted thereon suitable molds .ihes-e molds are preferably arranged to be rotated with respect to a concrete teedinp' trough 4 or any other suitable device which may be shifted from one mold to another successively as the moles are filled. The tables 2 are preferably rotated and iarred as hereinafter described by means of a main driving shaft 5 having beveled 'ear wheels 6 thereon adapted to mesh with beveled 7 n the countcrshafts 8 of the (litterent tables.

In Figs. 2 to 7 l have illustrated more in detail one of the iarrine machines. towith the operating; mechanism theretor. This machine preferably comprises a case member 9 supported on suitable foundation. The base member 9 is provided with central opening 10 for the reception ot a hollow shaft- 11. rotatably mounted on the upper end of which is the supporting table 2 for the mold 3. These molds 3 may be of any suitable type, but for molding pipe I prefer to use molds and cores such as shown in my co-pending applications. Serial No. 19d .389, filed @ctober 2, 1917, and Serial. No. 194,390, filed October 2, 1917. respec tively.

The table 2 is provided with a main casting 12 having an annular rib 13 and radial ribs let connecting the annular rib to a boss 15 rotatably mounted on the upper end of the hollow shaft 11. Secured to the top of the main casting 12 are a plurality of I- beams 16 which support the top of the table on which the mold or molds are directly supported.

Rotatably mounted in the bearings 18, which are preferably formed integrally with the base member 9, are three radially disposed shafts 19 each having on one end thereof a bevel gear 20 meshing with a bevel gear 21 rotatably mounted on the lower end of the hollow shaft 11. One of the shafts 19 is preferably connected by means of a loose clutch 22 with one of the counter-shafts 8 through the medium of a fixed clutch member 22 connected to said counter-shaft, the arrangement being such that all of the shafts 19 will be rotated in timed relation with the countershaft. Connected to each of the radial shafts 19, and between the sets of bearings 18 is a table actuating member 23. The

table actuating members on each of the' shafts are timed with relation to each other to simultaneously engage the table and ele- V veto it clear of an annular scat located beneath the annular flange iii of the table. The actuating members are also arranged to rotate the table during the elevation thereof, and then to suddenly release the table so that it will fall by gravity onto the seat 24;, the impact against the seat 2% serving to jar the mold and compact the corn crete. The actuating members do not rotate the support during its falling movement, but instead permit it to cease rotating and to drop against its seat without rotary motion at the time of impact.

The table actuating members 23 preferably each comprise a pair of plates 25 held in spaced relation by the spacing and connecting bolts or rivets 26. Between the plates 25 is a second pair of plates 27 which are held in properly spaced position by spacing or filling blocks 28 suitably secured there-be tween. The plates 27 carry a series of trans verse shafts 29 each supporting a table engaging, rotating and elevating roller .30.

' The periphery of each of the plates 27 is so formed that cam surfaces 31 are provided leading to the rollers 30, so that upon rotation of the radial shafts 19 the plates 25 will drive the intermediate plates 27, and

mechanism carried thereby through the me dium of the pins 32 engaging the extremities of the slots 33 in the plates 27 and thereby rotate and elevate the molds.

In the normal operation of the machine the table actuating members are rotated in the direction of the arrow A in Fig. 4 so that when the table is engaged by one of the cam surfaces 31 it will be rotated and raised until it is engaged by one of the rollers 30. Since the rollers 30 are free to rotate the mold will no longer be rotated by the table actuating members, but will be allowed to come to rest due to the friction of its rotary supporting bearing. As soon as the actuatiug members are turned far enough to move the table engaging rollers beyond their dead center positions vertically above the axes of the shafts 19, the rollers 30 and their carrying plates 27 will suddenly move ahead under, the downward thrust of gravity of the table against. the rollers 30. The lost motion between the plates 27 and the plates 25 permitted by the pin 32 and slot 373, permits the roller carrying plates 27 to turn ahead freely and allow the table to suddenly drop against the seat, the impact of the table against the seat, serving to jarthe mold to compact the concrete.

During thetime between the riding of the table onto the rollers 30 and the impact of force on the table, and during this time the table is allowed to cease rotation, so that it is rotationally stationary at the time of the jarring impact. The table is rotated coinparatively slowly and its momentum is absorbed by the friction of the parts before the completion of its falling'movement.

The shafts 19 and plates 25, which are continuously rotating, then take up the lost motion of the pin and slot connection and bring thenext' set of cam surfaces 31 and rollers 30 into engagement with the tables, whereupon. the operation of raising and rotating and then dropping the table will be repeated.

After the mold or molds supported on the table have been filled and jarred for a sulficiont length of. timeto properly compact the concrete, the table 2 is elevated and the clutch is: thrown to disconnect the machine fromv the countersha-ft 8.

The elevating mechanism comprises a turn-table having a lower member 36, which is secured to the upper end of a spindle 3T slidably mounted within the hollow shaft 11. This turn-table member 36 is provided with a ball racehaving balls 38 therein which are arranged to be engaged by a seating portion on the upper turn-table member 39 secured to the bottom plate 17 of the table 2; This spindle 37 is supported on a lever 40' pivoted at all to a suitable bracket mounted on the foundation of the structure One end of this lever 40 is engaged by. an elevating screw 42, which, when moved downwardly, will elevate the lower turn-table member 36 into engagement with the upper turn-table member 39, and raise the table 2 clear off its seat 24. This raising of the table 2 will permit it to be freely rotated by hand about its-axis, to enable-the workmen to readily move the table to bring the clamping devices of the molds at the desired point for releasing.

Pivotally connected to a bracket 4L3 on the frame of the machine is a clutch shifting member ll, one end of which is connected to the movable clutch member 22, while the other end thereof is connected by means of a link 45 with the end of the lever i0 opp0- site the actuating screw 42. \When the screw 42 is operated to elevate the table clear of its support, the clutch member 22 will be shifted longitudinally along the shaft 19 and disconnect it from the fixed clutch member 22 on the countershaft 8, and thereby stop the table actuating mechanism.

In carrying out my process the concrete is fed to the mold or molds supported on the table while the table is rotated and jarred and the f ed is continued until the proper amount of concrete has been fed to the mold or molds. After the proper amount has been fed to the mold or molds, this particular table may be jarred for a predetermined length of time, or the j arring may be stopped and the table raised as before described. The length of jarring after the feed of the concrete has been stopped being dependent upon the article or articles which are being formed. The molds that have just been filled and jarred are then permitted to remain on the tables for a predetermined length of time and are then removed from the molds.

The advantages of my invention result from the provision of method and apparatus for carrying out the method whereby the concrete is settled during the pouring thereof, so that each layer of concrete is settled as it is poured. Further advantages arise from the provision of the method and means for pouring the concrete in superimposed layers and continuously jarring and rotating the molds during the pouring, so that successive portions of each layer are settled before the next layer is poured.

Further advantages of my invention reside from the provision of a jarring machine which is simultaneously rotated and raised, but in which the rotation of the table is arrested at the time of the arring impact which compacts the concrete.

While I have illustrated and described the preferred embodiment of my invention, it is to be understood that the invention is not limited to its illustrated embodiment, but may be embodied in other structures within the scope of the following claims.

I claim:

1. jarring machine, comprising a mold support, and means for successively simultaneously rotating and elevating the support, and permitting the support to cease rotation, said means permitting the support to fall when it has ceased rotation to produce a sudden impact thereof, substantially as described.

2. A jarring machine, comprising a rotary mold support and actuating means for engaging the support to simultaneously rotate and el vate it, having lost motion so as to permit the support to fall, substantially as described.

A jarring machine, comprising a mold support, means for rotating'and elevating said support, means for engaging said support in elevated position to check rotation thereof, and a connection between said means permitting the support to fall when the rotation thereof has been checked. sub stantially as described.

A jarring machine, comprising a retary mold support, means for intermittently engaging the support to simultaneously raise and rotate the support, and means for engaging said support to permit dropping thereof without rotation, substantially as described.

5. A jarring machine, comprising a 1'0- tary mold support, and actuating means for the mold support comprising a rotary member provided with a cam face for simultaneonsly elevating and rotating the mold support and having a roller at the end of the cam for engaging the mold support after it is elevated by the cam so as to permit the mold support to cease rotation, substantially as described.

(5. A jarring machine, comprising a rotary mold support, and actuating means for the mold support comprising an actuating member to engage the support to simultaneously rotate and elevate it, said actuating member being arranged to permit the mold support to fall and become rotationally stationary at the time of impac and means for driving the actuating means having a lost motion connection therewith, substantially as described.

7. A jarring machine, comprising a retary mold support and actuating means therefor, comprising a continuously driven rotary member, a support-engaging member connected therewith by a connection having lost motion, said support engaging member having a cam for simultaneously elevating and rotating the mold support, and a roller at the end of the cam for permitting it to be suddenly moved ahead and allow the mold support to fall without rotation at the time of impact, substantially as described.

8. A jarring machine, comprising a support, a vertical axis therefor, a plurality of radial shafts, gearing between the radial shafts and the vertical shaft for the support, means for rotating said shafts, and means on the radial shafts for rotating and elevating the support, substantially as described.

9. A jarring machine, comprising a rotary support, a vertical shaft therefor, a plurality of radial shafts geared to the vertical shaft, means on the radial shafts for elevating and rotating the support, a bed plate adapted to form supporting means for said support when not engaged by the rotating means, and means for drivingsaid shafts,

substantially as described.

10. A jarring machine, comprising a rotary support, a vertical shaft therefor, a plurality of radial shafts geared to the vertiea shaft, means on the radial shafts for elevating and rotating the support, a bed plate adapted to form supporting means for said support when not engaged by the rotating means, a driving shaft, and a clutch connection between the driving shaft and one of the radial shafts, substantially as described.

ll. i jarring machine, comprising a retary support, a vertical shaft therefor, driving means for said support arra ged to simultaneously rotate and elevate the support, a main driving shaft, a clutch for connecting the main driving shaft to the sup port driving mechanism, and means for simultaneously disengaging said clutch and moving the support out of engagement with the support actuating means, substantially as described.

12. A jarring machine, comprising a rotary support, a base adapted to receive said support, a vertical shaft for the support mounted in a bearing on the base, a plurality of radial shafts geared to the vertical shaft, support driving and elevating means on the radial shafts. a driving shaft, a clutch connection between the driving shaft and one of the radial shafts, a support elevating device, and clutch actuating means for actuating the clutch and simultaneously actuate the support elevating means to move the support above the support raising and rotating means, substantially as described.

13. A jarring machine, comprising a base. a hollow shaft rotatably mounted in the base, a support connected to said shaft and arranged to be rotatedthereby, a plurality of radially disposed shafts rotatably mounted in bearings on the base, gearing connecting the vertical shaft to the radial shafts, support raising and rotating means on the radial shaft-s, means for'actuating said shafts, a support raising device within the hollow shaft, and means for actuating said support raising device to move the supiort above the support raising and rotating levies. substantially as described.

14;. A jarring machine, comprising; a rotary mold support, and means to engage the support to simultaneously rotate and elevate it, said means being arranged to permit the engaging means to run ahead of the support and permit it to fall by gravity to jar the support, substantially as described.

15. A jarring machine for molds, comprisi a mold support. and means for pcriodically simultaneously rotating and elevating said support and then holding the support in elevated position until rotation thereof has ceased, said means permitting the support to fall suddenly to compact the material in the molds when the support has ceased rotation, whereby said molds are not subjected to centrifugal force duringfthe compacting of material therein, substantially as described. g

in testimony whereof I have hereunto set my hand. J

CHARLES F, BUENTE.

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