US2251447A - Concrete block machine - Google Patents

Description

Aug 5, 1941. L. GELBMAN E'l AL CONCRETE BLOCK MACHINE Filed Feb. 21, 1 938 INVENTORfi LOUIS qezammv, susgue E 01.6611,

M GRTHvR a. M x5 A ORNEY.

4.1.FLHOHL ULUUK AND EARTHENWARF APPARATUS.

Patented Aug. 5, 1941 Search Room CONCRETE BLOCK MACHINE Louis Gelbman, Yonkers, N. Y., and Eugene F.

Olsen and Arthur B. Mays, Adrian, Mich., assignors, by mesne assignments, of eleven-twentieths to Hamlin F. Andrus and nine-twentieths to Louis Gelbman, both of Yonkers, N. Y.

Application February 21, 1938, Serial No. 191,640

Claims.

This invention relates to new and useful improvements in concrete block machines.

This application is a continuation in part of our application Serial No. 161,370 filed August 28, 193"! for Concrete block machine.

The invention has for an object to provide a construction for vibrating the mold of a concrete machine, which construction overcomes defects of similar prior constructions.

Specifically, the invention refers to a vibration mechanism which is characterized by an offbalance shaft spaced from the mold and supported in bearings which are capable of reciprocating. This invention proposes a novel connection between the bearings and themold for transmitting the vibration of theimbalanced shaft when the latter is driven.

Furthermore, the invention has special reference to a mold which is arranged to be reciprocal within a limited amplitude and to a vibrator mechanism which is capable of vibrating the mold through a greater distance than this limited amplitude. The connection between the bearings previously mentioned and the mold are to be such that the vibrations are transmitted to the mold for reciprocating the mold within the limits within which it is permitted to move.

A further object of the invention is to provide a connection between the bearing and the mold, which connection is flexible or bendable in a plane at right angles to the longitudinal length of the shaft.

Furthermore, it is proposed to so support the bearing that in addition to being free to transmit the reciprocal vibrations, it is free to turn slightly in one direction or the other in a plane at right angles to the longitudinal length of the shaft. It is proposed to provide a simple device for so supporting the bearings.

It is proposed to provide links between the bearings and the mold with a pivot connection interposed some place between these parts to permit bending upon an axis which is parallel to the longitudinal length of the shaft.

With a construction as defined above, according to this invention, the connecting mechanism between the vibrator means and the mold will be of a nature which is flexible and capable of giving (instead of being rigid and of a type which must carry its load or break). With the flexible arrangement it is possible for the parts to bend and flex while efliciently transmitting the reciprocal motion. Thus a very durable construction is provided. This construction overcomes the chief defect of breakage of parts in the transmission mechanism of the vibrations from the vibration mechanism to the mold.

Another object of the invention is the construction of a device as described which is simple and durable and which may be manufactured and sold at a reasonable cost.

For further comprehension of the invention, and of the objects and advantages thereof, reference will be had to the following description and accompanying drawing, and to the appended claims in which the various novel features of the invention are more particularly set forth.

In the accompanying drawing forming a material part of this disclosure:

Fig. l is a front elevational view of a mold of a concrete block machine and a construction according to this invention associated therewith.

Fig. 2 is a transverse vertical sectional veiw taken on the line 2-4 of Fig. 1.

Fig. 3 is a horizontal sectional view taken on the line 33 of Fig. 1.

Fig. 4 is a vertical sectional view taken on the line 4-4 of Fig. 2.

Fig. 5 is a perspective view of one of the studs and its anchorage mechanism which is used for holding the bearings of the device.

Fig. 6 is a vertical sectional view taken on the line 5-6 of Fig. 5.

This invention is intended for the mold of a block making machine. The details of construction of the machine itself form no part of the invention and are not necessary for an understanding of the block machine nor to comprehend this invention, and hence a description of the machine will be omitted from this specification.

The numeral I0 indicates the mold of the concrete block machine into which the concrete material is to be disposed so that thereafter the mold in may be vibrated to settle or pack the concrete mass therein and so form the block. The mold I0 is supported in a manner so as to be reciprocal. The mold is supported on several parallel bars H and is attached to a base element 2 which consists of a pair of parallel bar sectiors 12a at right angles to the bars II and at their ends are integral with bar elements 12b. The bar elements In are supported and rested freely upon four corner members I3. Each of these comer members comprises a vertically disposed angle body having a top wall 13a and an intermediate lower wall l3b. Through each corner member a bolt I4 passes. This bolt has a nut l5 adjustably mounted on its bottom end and adapted to strike the undersurface of the wall 13b. The bolt extends upwards through the wall |3a and through the bar section |2b, and at its top is formed with a head l6 which rests aganist the bar section |2b.

These corner posts l3 are arranged substantiallyat the four corners of the mold and serve to support the mold in a manner so that it may move vertically a limited amount, depending merely on the clearance ll, that is, the distance between the bolts l5 and the underface of the wall l3b. It should be noted that normally the mold I is supported indirectly by the bar elements |2a resting on the corner posts I3. Because of the four bolts l4 the mold It) can only move in the vertical direction. Furthermore, it may only move a limited distance depending on the spaces l1, since after it moves this amount the nuts |5 will strike the Wall portion |3b.

The corner members |3 are mounted upon and secured on the top of a pair of spaced channel members 20. These channel members are reinforced by auxiliary channel members 2| secured between the arms thereof. The channel members are mounted within a concrete foundation 22 and upon a concrete block 23 which is mounted in the foundation and insulated therefrom by vibration absorbing material 24. Between the channel members there is a space or trough in the foundation 22 in which the vibration mechanism is set.

This vibration mechanism comprises a pair of spaced bearings 25 which rotatively support a shaft 26. This shaft is provided with ofi-balance weights 21 so that when the shaft is rotated it tends to fly in all directions. A pair of flanges 28 are mounted upon the shaft 26. A flange 29 is secured to one of the channel members 20 and engages between the flanges 26 to hold the shaft 26 against longitudinal motion. The flanges 28 and 29 permit vertical motion of the shaft 26, as well as turning. The bearings 25 are thrust bearings so that there is no tendency for them to slip along the shaft 26. Each bearing 25 is held in a manner so that it may move vertically and also so that it may pivot slightly about the shaft 26 as an axis if such tendency develops. More specifically, each bearing 25 rests upon a rubber or other resilient pad 36 which in turn rests on the foundation block 23.

A pair of studs 3| are supported on the opposite sides of the bearing 25 in a horizontal plane through the center of the shaft 26 and these studs engage the sides of the bearings 25 so as to limit the bearings from moving sidewise. These studs 3| permit the bearings to move vertically and also permit the hearings to twist or tur about the shaft 26 as an axis.

Each stud 3| is supported in a block 32. It is adjustable in this block by reason of being threadedly engaged therein and held in desired positions by a nut 33. The blocks 32 are set into recesses of larger blocks 34 which are secured to the auxiliary channel members 2 I. Resilient material 35 is disposed in between the blocks 32 and 34 and insulate them from transmitting vibrations. The studs 3| pass through large openings 36 in the channel members 20 and so reach and touch the bearings 25.

A pair of relatively flexible and strong leaf links 31 are attached at their lower ends to the opposite sides of each bearing 25 and extend upwards and at their top ends are attached to a block 38. The block 38 is disposed between a pair of spaced lugs 39 mounted upon the bar |2b of the base element l2. These lugs 39 are arranged at the opposite sides of the base element l2 and upon the center line of the mold, that is, directly between the bolts H. The arrangement is such that each of the bearings 25 is indirectly connected to the mold |0 along the center line of the mold and at the sides of the mold.

The shaft 26 is connected with a flexible coupling 40, which in turn connects with an electric motor 4| mounted upon the foundation 22.

The operation of the device is as follows:

When the shaft 26 is driven by the motor 4| it-will rotate in the bearings 25 and because of the unbalanced weights 21 it will tend to fly in all directions due to centrifugal force. Since the bearings 25 are limited to move vertically only the shaft 26 will be correspondingly restrained. Furthermore, since the bearings 25 are connected by the links 31 with the base element l2, and the base element in turn is limited to move a limited amount in the vertical direction by the bolts l4 the bearings 25 will be correspondingly restrained. The net result of the turning of the shaft 26 will be that the mold I!) will w vibrated vertically.

The vibrations will be transmitted by the links 31 and these links 31 are so secured and held as to be relatively flexible. Should a torque stress develop in the bearings 25 it is possible for the bearings to swing in one direction or the other a limited amount about the studs 3| as trunnion elements, and the shaft 26 as an axis. Furthermore, the mold I0 may swing a limited amount about the pivot points 42 of the blocks 38 and the lugs 39. With this construction it is practically impossible for any stresses to develop in the mechanism which transmits the vibrations, which stresses must either be absorbed or break some of the parts. It is possible for such developed stresses to be dissipated by the flexible connections within the transmission of the vibration mechanism.

While we have illustrated and described our invention with some degree of particularity, we realize that in practice various alterations therein may be made. We therefore reserve the right and privilege of changing the form of the details of construction or otherwise altering the arrangement of the correlated parts without departing from the spirit or the scope of the appended claims.

Having thus described our invention, what we claim as new and desire to secure by United States Letters Patent is:

1. In a vibration mechanism, a sup or e ber reciprocally supported, a bearing reciprocally supported to reciprocate in the same direction as said support member, an fi-balanced shaft rotatively mounted in said bearing and spaced from said support member and disposed with its axis at right angles to the direction of reciprocation of said support, and a link mounted on said bearing and connected with said support member.

2. In a vibration mechanism, a support member reciprocally supported, a bearing reciprocally supported to reciprocate in the same direction as said support member, an off-balanced shaft rotatively mounted in said bearing and spaced from said support member and disposed with its axis at right angles to the direction of reciprocation of said support, a link mounted on said bearing and connected with said support member, ang rneans for limiting theamplitude of reciprocation-of sap supiiort meiiiber.

3. IrTa'vibra'tion mechanism, a support member reciprocally upported, a bearing reciprocal- 1y supported to eciprocate in the same direction as said support member, an off-balanced shaft rotatively mounted in said bearing and spaced from said support member and disposed with its axisalfiight angles to the direction of reciprocation of said support, a link mounted on said bearing and connected with said support mem ber, and resilient means connected with sides of said bearing in relation to the direction of reciprocation for absorbing lateral vibrations.

4. In a vibration mechanism, a support member reciprocally supported, a bearing reciprocally supported to reciprocate in the same direction as said support member, an off-balanced shaft rotatively mounted in said bearing and spaced from said support member and disposed with its axis at right angles to the direction of reciprocation of said support, a link mounted on said bearing and connected with said support member, and resilient means connected with sides of said bearing in relation to the direction of reciprocation for absorbing lateral vibrations, said resilient means comprising resilient pads.

5. In a vibration mechanism, a support member reciprocally supported, a bearing reciprocally supported to reciprocate in the same direction as said support member, an off-balanced shaft rotatively mounted in said bearing and spaced from said support member and disposed with its axis at right angles to the direction of reciprocation of said support, said bearing being capable of oscillating upon said shaft, and a link mounted on said bearing and connected with said support member.

6. In a vibration mechanism, a support member reciprocally supported, an off-balanced shaft spaced from said support member and disposed with its axis at right angles to the direction of reciprocation of said support, a bearing movably supported to reciprocate in the same direction as said support member said bearing being capable of oscillating upon said shaft, and a link mounted on said bearing and pivotally connected with said support member.

7. In a vibration mechanism a support member reciprocally supported, an off-balanced shaft spaced from said support member and disposed with its axis at right angles to the direction of reciprocation of said support, a bearing movably supported to reciprocate in the same direction as said support member said bearing being capable of oscillating upon said shaft, and a link mounted on said bearing and pivotally connected with said support member to turn on an axis parallel with said shaft.

8. In a vibration mechanism a support member, means for reciprocally supporting said support member, an off-balanced shaft spaced from said support member and disposed with its axis at right angles to the direction of reciprocation of said support member, a bearing rotatively supporting said shaft, means for flexibly supporting said bearing so that said bearing may reciprocate in the same direction with said reciprocal support member and so that said bearing may oscillate on said shaft and a link mounted on said bearing and pivotally connected with said support member to turn on an axis parallel with said shaft.

9. In a vibration mechanism, a support member means for reciprocally supporting said support member, an off-balanced shaft spaced from said support member and disposed with its axis at right angles to the direction of reciprocation of said support member, a bearing rotatively supporting said shaft, means for flexibly supporting said bearing so that said bearing may reciprocate Search Room in the same direction with said reciprocal support member and so that said bearing may oscillate on said shaft and a link mounted on said bearing and pivotally connected with said support member to turn on an axis parallel with said shaft, said means for supporting said bearing includes a pair of fixedly mounted studs engaging opposite sides of said bearing in a plane through the axis of said shaft and at right angles to the direction of reciprocation of said support member.

10. In a vibration mechanisma support member, means for reciprocally supporting said support member, an off-balanced shaft spaced from said support member and disposed with its axis at right angles to the direction of reciprocation of said support member, a bearing rotatively supporting said shaft, means for flexibly supporting said bearing so that said bearing may reciprocate in the same direction with said reciprocal support member and so that said bearing may oscillate on said shaft and a link mounted on said bearing and pivotally connected with said support member to turn on an axis parallel with said shaft, said means for supporting said bearing includes a pair of fixedly mounted studs engaging opposite sides of said bearing in a plane through the axis of said shaft and at right angles to the direction of reciprocation of said support member, and each of said studs being mounted on a resiliently supported element.

g ll. In a vibration mechanism, a w- ,ber, means for reciprocally supporting said support member, an ofiiagncedshaft spaced from said support member and disposed with its axis at right angles to the direction of reciprocation of said support member, a bearing rotatively supporting said shaft, means for flexibly supporting said bearing so that said bearing may reciprocate in the same direction with said reciprocal support member and so that said bearing may oscillate on said shaft and a link mounted on said bearing and pivotally connected with said support member to turn on an axis parallel with said shaft, said means for supporting said bearing includes a nair o.f fix-edly mounted studs engaging opposite sides of said bearing in a plane through the axis of said shaft and at right angles to the direction of reciprocation of said support member, and each of said studs being adjustably mounted on a resiliently supported element so as to make it possible to obtain a desired tolerance with relation to the sides of said bearing.

12. In a vibration mechanism, a support member reciprocally supported, a bearing reciprocally supported to reciprocate in the same direction as said support member, an off-balanced shaft rotatively mounted in said bearing and spaced from said support member and disposed with its axis at right angles to the direction of reciprocation of said support, and a pair of links mounted on opposite sides of said bearing and connected with said support member.

13. In a vibration mechanism, a support member, means for reciprocally supporting said support member, an off-balanced shaft spaced from said support member and disposed with its axis at right angles to the direction of reciprocation of said support member, a bearing rotatively supporting said shaft, means for flexibly supporting said bearing so that said hearing may reciprocate in the same direction with said reciprocal support member and so that said bearing may oscillate on said shaft, and a pair of links mounted on opposite sides of said bearing and pivotally connected with said support member to jurn on an axis parallel with said shaft.

Mfih a vibration mechanism, a support member, means for reciprocally supporting said support member, an off-balanced shaft spaced from said support member and disposed with its axis at right angles to the direction of reciprocation of said support member, a bearing rotatively supporting said shaft, means for flexibly supporting said hearing so that said bearing may reciprocate in the same direction with said reciprocal support member and so that said bearing may oscillate on said shaft, and a pair of links mounted on opposite sides of said bearing and pivotally connected with said support member to turn on an axis parallel with said shaft, the pivotal mounting of said pair of links upon said support member comprising a block mounted between said pair of links, lugs mounted on said support member, and a pintle pivotally connecting said lugs and said blocks.

15. A vibration mechanism, comprising a support member reciprocally supported, a pair of spaced bearings reciprocally supported to reciprocate in the same direction as said support member, an off-balanced shaft rotatively mounted in said bearing and spaced from said support member and disposed with its axis at right angles to the direction of reciprocation of said support, and links mounted on said bearings and connected with said support member.

. LOUIS GELBMAN.

EUGENE F. OLSEN. ARTHUR B. MAYS.

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