US1688627A - Attachment for concrete-block machines - Google Patents

Description

Oct. 23, 1928.

E. A. LONG ATTACHMENT FOR CONCRETE BLOCK MACHINES Filed Oct. 14, 1927 2 Sheets-Sheet l Oct. 23, 1928. 4 1,688,627

- E. A. LQNG' ATTACHMENT FOR CONCRETE BLOCK MACHINES Filed 001:. 14, 1927 2 Sheets-Sfieet 2 I EJwqrdflLogg, M/z, 4,,

Patented Oct. 23, 1928.

PATENT OFFICE.

EDWARD A. LONG, OF NEW CASTLE, PENNSYLVANIA.

ATTACHMENT FOR CONCRETE-BLOCK MACHINES.

Application filed October 14, .1927.

The object of this present invention, broadly stated, is the provision of an attachment to be employed in connection with concrete block forming machines, the same being simple in construction, positive in its actions and results, automatic in its operation, easily installed in operative position, and which can be manufactured and sold at a compara tively low price.

More specifically stated: My object is to provide a device to be connected to a concrete block forming machine whereby wooden nailing blocks may be secured in the mold easily and quickly and then, after the concrete block has been formed in the mold, the sup porting means for said wooden blocks will be automatically removed as the mold is being opened to release the concrete block formed therein, and then again assuming operative position when the mold is being closed ready to form another concrete block.

Other minor objects and particular advantages of the invention will suggest themselves in the course of the following description, and that which is new will be correlated in the appended claims. The preferred means for carrying out the principles of my invention in practical, efficient and economical manner, is shown in the accompanying two-sheets of drawings, in which Figure 1 is a perspective view of a portion of a concrete block forming machine, certain parts being omitted, in order to show the interior thereof, and showing a portion of my invention.

Figure 2 is a face view of the same, certain parts being in section, and showing a side elevation of my invention in operative position in connection therewith.

Figure 3 shows certain parts of said machine, showing my invention in connection.

therewith, the end-gates of the machine being partly opened, and certain parts of the machine being in section.

Figure 4 is a bottom plan view of the facplate, or base member of the core-box of the machine.

Figure 5 is a top plan View of the facing plate support, or the base of the machine.

Figure 6 is a top plan view of the flatspring or main member of my invention proper.

Figure 7 is an edge view or side elevation of my invention.

Serial No. 226,210.

Figure 8 shows one of the pointed pintles before being secured in place in connection with the main member of the invention.

Figure 9 is a perspective view of a concrete block, showing the nailing block located therein.

Figure 10 is a longitudinal section of the block shown in F ig. 9, the same being a central longitudinal section thereof.

Figure 11 a perspective view of a square nailing block.

And Figure 12 is a perspective view of a round nailing block.

Similar indices denote like parts throughout the several views.

In the following description I will designate the parts which are new by means of numerals, while the parts which are old will be designated by letters of reference. The parts which are old are shown merely to make clear the purpose and the operation of my invention with relation thereto.

In order that the construction, the operation, and the several advantages of my invention may be more fully understood and appreciated, I will now take up a detailed description thereof, in which 1 will set forth the same as comprehensively as I may.

My invention comprises a relative long flat'spring, which may be considered as of three parts: A normally straight main portionor part 1, and the two outer parts, 2 and 3, which curve upwardly and outwardly at an angle from tl e ends of the part 1 of which they are continuations and with which thev are integral. v

Formed through the center of said spring, that through the center of the part 1, is an aperture l to receive the screw-bolt 5. Also formed through the part 1, near the ends thereof, are the pintle-apertures 6 and 7. Also formed through the part 1, and located near the respective apertures 6 and 7, are the apertures 8 and 9, through which the bolts 12 and 13 may freely operate. Said bolts 12 and 13 are adapted to retain the facing plate F to the member A or base of the machine, as hereinafter explained.

1 ormed integral with the surfaces of the parts 2 and 3, and located near the free ends thereof, are the respective knobs, or catches, 10 and 11, for the purpose hereinafter 6X' plained. Each of said bolts 12 and 13 has a head on its upper end, and their lower-end portions are threaded to receive thereon the respective nuts 14 and 15, for the purpose hereinafter made clear.

Numerals 16 and 17 denote coil springs which loosely surround the respective bolts 12 and 13 and they are located between the member A of the machine and the underside of the member 1.

Two sharp-pointed pintles, 18 and 19, are provided which are secured in their respective apertures 6 and 7. As is indicatech'the upper portions of said pintles taper to sharp points and their lower portions are threaded to receive thereon the respective nuts 20 and 21. Said pintles are secured in operative po sition by first running the nuts on their pintles; then inserting the lower ends of the pintles downward through the respective apertures 6 and 7; after which the lower protruding end portions of the pintles are riveted, that is battered as at 00 in Fig. 7, until a head is formed thereby which is in contact with the underside of the member 1, which, manifestly, will rigidly secure the pintles in operative position, but if they should inadvertently become loosened they may beretightened by simply tightening down the nuts 20 and 21.

The above comprises all of the essential features of my invention, and the parts remaining to be described are all of well known construction, but they are essential to the successful operation of my invention in connection therewith, therefore the parts which are old will not be described in minut-ia, but only such as will make clear the attachment and the operation of my invention with relation thereto.

The machine with which my invention may be used comprises the facing plate support or base member A, from each end of which projects a pair of arms, B and B, left and right respectively.

The mold box is formed by the baclr C, the front (which is not shown), and the end gates D and E which extend between the front and the back. The bottom of the mold box is formed by the detachable facing plate F, shown inverted in Fig. 4, the upper face of which may be plain, or configured if so desired.

Extending downward from the outer face of each of the end gates, D and E, is a pair of supporting arms G and G, respectively, which are pivoted at their lower portions to the respective arms B and B whereby the end gates may stand vertical, that is in closed position as in Figs. 1 and 2, or they may be turned outward into open position as in Figs. 3 and 5.

Formed on the underside of the plate F is a pair of securing prongs, 23 and 23, for the purpose hereinafter made apparent.

' Said plate F is removably placed on the base A and it extends between the front of the mold box, the back C thereof, and the end gates D and E, when the end gates are closed.

Said facing plate F has a central aperture- 22 to receive the end of the bolt 5; and it also has two unthreaded apertures therethrough in which the pintles 18 and 19 may freely operate.

Slots 25 and 25 are formed longitudinally through the base A, to receive the respective '25 bolts 12 and 13 therethrough, as shown.

Letter H denotes a concrete block which has been formed in the mold box of the machine, and sho-wing'a square nailing blockI, and a round nailing block J, imbedded thereso in, although usually both of the nailing blocks would be either square or round, in cross section. Said nailing blocks or Keys are fully set forth in Letters Patent No. 1,583,077, issued to me on May 4, 1926.

In placing my invention in operative position, in connection with a machine, the procedure is substantially as follows: The pin tles 18 and 19 at this time, or prior thereto, are secured in position in connection with 0" the main flat spring member, in the manner above set forth, as is clearly shown in Fig. 7 of the drawings.

First, the bolts 12 and 13 are positionedv with their heads in the respective prongs 23 9.: and 23 of the plate F. The flat spring member (comprising the parts 123) is then placed across the center of the bottom of the plate F, before said plate is inserted in the machine, with the pintles 18 and 19 entering their rspective apertures 24 and 24. The bolts 12 and 13 at the same time entering the respective apertures 8 and 9 of the flat spring. The bolt 5 is then entered through the aperture A and run into the threaded aperture 22 of the facing plate, which will bring the central portion of the fiat spring tight against the underside of the plate F. The springs 16 and 17 are then placed around the protruding portions of the respective bolts 12 and 13. in)

The facing plate F is then placed. upon the member A, with the bolts 12 and 13 inserted through the slots. 25 and 25, respectively. The nuts 14 and 15 are then run on the lower ends of the respective bolts 12 and '1 13, and then tightened up against the underside of the member A, therebycausing the springs 16 and 17 to press against the memher 1 of the flat spring and against the T116111? her A of the machine, thereby retaining the rm flat spring resiliently in contact with the underside of the face plate F and with the facing plate rigidly in contact with the member A of the machine.

At this point the invention will be in the position in which it is shown in Figs. 1 and 2, with the pointed end portions of the pintles 18 and 19 projecting upward through the respective apertures 24 and 24:, into the interior of the core box.

Lit.

The machine, with my invention attached, now being ready to form a concrete block, the end gates being closed, therefore the pintles will be projected into the core-box. Desiring to have nailing blocks, I or J, in the concrete block to be formed, therefore at this time one of the wooden nailing blocks is pressed onto each of said pintles whereby they will be suspended inside the core-box, as shown in Figs. 2 and 3. The material to form the concrete block is then placed in the core-box, and after the concrete block has been formed and is ready to be removed from the core-box, then the core-box may be opened in the usual manner, one operation of which is to turn the end gates D and E outward and downward, thereby bending the flat spring against its own resiliency and also that of the coil springs 16 and 17 which, manifestly, will withdraw the points of the pintles from the nailing blocks whereby they will not interfere with the removal of the concrete block from the machine. As the cue gates are opened out it is evident that the members 2 and 3 of the flat spring will be engaged with the lower edges of the end gates, and finally the lower edges of the end gates will slide over the respective knobs 10 and 11, thereby locking the fiat spring in its bent position until after the concrete block has been removed and the end gates are again closed ready to form a new concrete block, at which time the flat spring will be free to move the pintles back to position ready to have other nailing blocks attached thereto, as before stated.

It is to be understood that I am not to be limited to the particular make of machine herein shown, as my invention may be adapted to various types and makes of concrete block forming machines without changing the principles of my invention as herein set forth and claimed. 1

I desire that it be understood that various changes may be made in the details of con struction herein set forth without departing from the principles of my invention and without sacrificing any of the advantages thereof which are new and useful.

Iaving now fully shown and described my invention, and one manner of its attachment and operation, what I claim and desire to secure by Letters Patent of the United States, 18-- 1. A flat spring rigidly secured in its central portion with the outer portions thereof adapted to be sprung up'and down, pointed pintles carried by the movable portions of said spring, and knobs extending upwardly from the end portions of the spring.

2. A flat spring secured in its central portion with its outer portions adapted to move resiliently up and down, pintles secured to said spring and extending upwardly therefrom, catches formed on the outer portions of the spring, bolts having their heads secured above said spring and extending downwardly through apertures in the spring and adjustably secured below said spring, and coil springs surrounding said bolts and contacting with said flat spring.

3.In combination with a concrete block forming machine having a block forming enclosure, a flat spring extending under said enclosure and secured in the center to the under side thereof, a pair of sharp pointed pintles secured to said spring and extending upward into said enclosure, and means whereby when the ends of said enclosure are being opened the ends of said spring will bend downward whereby said pintles will be withdrawn from the enclosure.

t. In combination with a concrete block forming machine having a block forming enclosure with end gates adapted to be opened outward, a fiat spring extending under said enclosure and secured in its central portion, coil spring-s adapted to normally press said flat spring upward, pintles secured to said flat spring and extending upward in to the interior of said enclosure but adapted to be withdrawn therefrom when the ends of the fiat spring are bent downward in the operation of opening said enclosure, and

means for retaining said pintles in withdrawn position when said enclosure is opened.

5. In combination with a concrete block I forming machine having a core-box, a facing plate forming the bottom of the core-box, a base on which the facing plate rests, and end gates for the core-box; a fiat spring extending between the facing plate and the base and detachably secured in its center to the facing plate, pintles extending from the flat spring through apertures in the facing plate with their points extending into the core-box but adapted to be withdrawn therefrom when the end portions of the flat spring are bent downward, bolts attached to the facing plate and extending down through the fiat spring and the base, nuts on the lower ends of said bolts contacting with the underside of the base, a coil spring surrounding each of said bolts and compressed between the facing plate and said base, means whereby the end portions of the flat spring will be bent down ward as the end gates are opened, and means for locking the end gates in open position whereby said pintles will be held in withdrawn position with relation to the interior of the core-box.

In testimony whereof I have hereunto subscribed my name to this specification and claims.

EDWARD A. LONG.

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