US3077362A

US3077362A - Plate holder

Info

Publication number: US3077362A
Application number: US802897A
Authority: US
Inventors: Louis H Hosbein
Original assignee: MH Detrick Co
Current assignee: MH Detrick Co
Priority date: 1959-03-30
Filing date: 1959-03-30
Publication date: 1963-02-12
Anticipated expiration: 1980-02-12

Description

Feb. 12, 1963 L. H. HosBElN PLATE HOLDER 4 Sheets-Sheet l Filed March 30. 1959 i JNVENzjoR. A Zoals 17j/051760? L. H. HOSBEIN PLATE HOLDER Feb. l2, 1963 4 sheets-sn'et 2 Filed March 30. 1959 INVENTOIL l .n ...l ....r. t...

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PLATE HOLDER 4 Sheets-Sheet 3 Filed March 50, 1959 INVENToR. [md5 J1'. Hobcnz mg Z '71 Y o/'neI/S L. H. HOSBEIN PLATE HOLDER Feb. 12, 1963 4 Sheets-Sheet 4 Filed March 50. 1959 Ff@ i6 i' il!" illli.

hired States 3,677,32 Patented Feb. l2, 1953 3,077,362 PLATE HOLDER Louis l. Hosbein, Glencoe, lll., assigner to M. H. Detrick Company, Chicago, lll., a corporation of Delaware Filed Mar. 3e, 1959, Ser. No. $92,897 S Claims. (Cl. 29d-87) My invention relates to means for, and method of, placing one or more metal plates within the interior of a brick mold cavity prior to the molding of the brick.

An object of my invention is to provide a means for, and method of, placing metal plates within the interior of a brick mold cavity prior to the filling of the mold with aggregate.

Another object of my invention is to provide a means for, and method of, disposing metal plates within the interior of a brick prior to compression of the brick. A still further object of my invention is to provide a means for, and method of, disposing metal plates within the interior of a brick prior to molding of said brick and without distortion of said metal plates.

Another object of my invention is to provide a means for, and method of, placing metal spacer plates within the interior of a brick prior to molding of the brick and without need for an exterior metal band around said brick.

While bricks have been made with metal `spacer plates therein, no economical and expeditious method has here tofore been known whereby such spacer plates may be easily and efficiently placed within the interior of a 1orick mold cavity prior to the introduction of brick aggregate into the mold cavity. In the usual method of introducing metal spacer plates within the interior of a brick, it has been customary to force the plates into the aggregate after the mold cavity has been filled with brick aggregate. This results in warping and distortion of the spacer plates with resultant tendency of spalling of the brick in the areas wherein the plates are bent or distorted.

My invention overcomes these dir'iiculties and provides a means for quickly and economically placing metal plates within the interior of a brick prior to molding thereof.

My invention also provides a means for, and method of, disposing metal plates within the interior of a brick during the process of forming said brick without interrupting the cyclic operation of the brick molding machine,

Other advantages brought about by my invention will become apparent from the following specific description thereof in connection with the accompanying drawings in which:

FIG. 1 is a perspective view showing co-moldcd brick with outline in phantom;

FIG. 2 is a side elevation of plate holder fixture with plates showing fixture within brick mold cavity prior to addition of brick aggregate;

FlG. 3 is the same as FIG. 2, but after aggregate has been added;

FlG. i is the same as FIG. 3 showing leased position;

FIG. 5 shows a cross-sectional view of brick in mold cavity after compression;

PIG. 6 is a plan view of placement fixture and plates in mold cavity;

FIG. 7 is a sectional elevational taken along line 7-7 of FIG. 6;

FIG. 8 is an end elevation taken along line 8-8 of 1G. 7 showing the handle ends;

FIG. 9 is a fragmentary side elevation of stationary first plate holding comb or jaw;

plates in re- FIG. 10 is a. fragmentary side elevational view of he second plate holding comb or jaw;

FIG. 11 is a perspective of the plate holder with plates;

FIG. 12 is a plan view of the magnetic placement fixture with plates;

FIG. 13 is a View taken along line 13-13 of FlG. 12;

FIG. 14 is a plan view of another modication of a plate holder;

FIG. 15 is a section taken along line 15-15 of FIG. 14;

FIG. 16 is a section taken along line l-16 of FIG. l5;

FIG. 17 is a section taken along line l7-1i7 of FlG. 15; and

FIG. 18 is a section taken along line 1S-13 of FIG. 15.

Referring now -to the drawings, FIG. l shows a perspective view of a co-molded brick 2d having plates 2l therein. The plates 21 may be solid, perforated or expanded metal.

FIG. 2 is a side elevation of my plate holder fixture which is generally designated as 22. in this view the fixture is shown with plates in the holder, said holder being within a brick mold cavity 23 prior to the introduction of aggregate into the cavity. Top and bottom plungers 24 compress the brick aggregate in the process of molding the brick. A filler box 25 is shown in dot and dash outline in FlGS. 2 and 3; said box being the means for placing a measured amount of aggregate in the brick mold cavity 23.

Referring more particularly to FlG. l1, my plate holder comprises a frame 26 to which is rigidly attached handle members 27. A first plate holding comb 28 is rigidly attached to the handle members 27 and to the frame 26. Said comb is provided with generally U-shaped slots 29' for the reception of plates 2. The first plate holding comb or jaw has elongated slots 3d (FIG. 9) to provide for adjustable attachment of the comb to frame 25 and handle member 2.7.

A pair of second plate holding combs or jaws 31 (FIG. 10) is provided. Said jaws 31 are attached to the distal end of lever means 32. Lever means 32 and combs or jaws 31 are pivotally connecte-:1 with the frame 26 by means of a pin 33. Compression spring means 34 (FIGS. 2, 3 and 6) are provided between handle members 27 and lever means 32 to hold the second plate holding combs or jaws in a vertical position as best shown in FIGS. 2 and l1. Second plate holding combs or jaws 31 have benerally U-shaped slots 29 for the reception of plates 21. Said U-shaped slots form vertically disposed lingers 39 having vertically disposed flat surfaces 35 for reception of metal plates across their face. Lips 35 may be provided at the terminal portion of said fingers and said U-shaped slots in order to more effectively hold the plates in position during the loading operation (FIG. 10).

My plate holder operates in the following manner:

Lever 32 is held in the closed position, best shown in FIG. 4. In this position the second plate holding jaw or comb means 31 has rotated about the pin 33 so as to move the flat surfaces 35 of second plate holding jaws or combs away from the flat surfaces 35 of the first plate holding comb or jaw 2d. The plates 2i are then placed in the holder so that one surface 35 thereof is against the vertical surface of the U-shaped slot of the first plate holding comb or jaw 28 and against the vertical surface 3S of the U-shaped slots of the second plate holding comb or jaw 31, as shown in FGS. 2 .and 11. The lever is then allowed to open by means of pressure er:- erted by the spring means 34 so that lever means 32 and its associated second plate holding comb or jaw 31 rotates about pin 33, so that the second plate holding comb or jaw will press the metal plates 2l against the inside vertical surfaces 35 of the U-shaped slots 29 of first holding plate comb or jaw 2d as well as against the vertical surfaces 35 of slots 29 of second plate holding comb or jaw 3J..

The plate holder with the plates now rigidly in position is introduced into the mold cavity 23, as best shown in FIG. 2. The filler box 25 is now brought forward to fill the mold cavity 23 with aggregate 37, as shown in FIG. 3.

As shown in these and other views, the plate holder and filler box is supported by the top 38 of the brick molding machine.

A prior molded brick 20l is pushed forward upon the top 33 of the brick molding machine by filler box 25 at the same time that the mold cavity 23 is being filled.

After the mold has been filled with aggregate, lever 32. is then raised as shown in FIG. 4 whereby it rotates second plate holding combs or jaws 31 about the pin 33 whereby to retract the second plate holding comb surfaces 35 away from the plates 21 whereby to free said plates from the grip of said plate holder.

The plate holder is now raised yvertically and withdrawn from the aggregate filled mold cavity leaving the metal plates evenly distributed within the mold cavity 23. Plungers 24 are then actuated to compress the brick aggregate with the metal plates therein to form a comolded brick 20. Y

In a second but preferred embodiment of my invention (FIGS. 1448) a generally U-shaped frame 40 is provided. Attached to said frame or as a continuous portion thereof is a depending comb member or jaw 41, `said comb member or jaw having a U-shaped slot therein generally designated as 42. The end depending portions of said comb members or jaws form fingers 43. Second finger means 44 are movably attached to the U-shaped frame y40` to lie adjacent the lingers 43. n Elliptical openings 45 are provided in the frame 4t) for the attachment of second linger means 44 in such manner that said second finger means 44 are free to move laterally within the U-shaped slot 42. It is apparent of course that these second linger means 44 may be so attached that they will slide Iback and forth on the frame 40 when pressure is applied or they may be so attached so that they will swing about their point of attachment 45 in the manner of a pendulum. Comb members or jaws 41 may be attached to the frame 4d in any suitable manner such as by bolts and nuts or screws as shown at 46.

A cam member 47 is suspended through the frame 46 by means of a shaft 48. Said cam and shaft are held in position by means of -

bosses

49 and 50 provided on the cam 47 and lever 51 respectively. Said levers 51 are attached at their distal ends to the shaft 43 by means of the boss 49 as shown in FIGURE 14.

Upon rotation of the lever members 51 outwardly from each other as shown by the dotted lines in FIG. 14, the cam members 47 will rotate on their axes so that the external surfaces of the cam members will turn away from said linger means 44.

Upon movement of the lever members 51 into the closed position (as shown by solid lines in FIG. 14) the cam members will rotate to the closed position best shown in FIG. 15, so that the outer edge surfaces of the -cam members will move toward the inner edge surfaces yof second finger means 44.

Lever members 51 are preferably held in a closed position by spring means not shown. In operation, the lever members 51 are tu-rned to the open position, thu-s releasing any pressure which the cam may have exerted against second nger means 44. Metal plates 21 are then inserted in the slots between the lingers 43, second finger means 44 and the ca rn member 47.

Lever members 51 are .then moved toward each other causing the cam members to rotate on their axes so that the outer edge surfaces of the cams press against the plates which `have -been inserted ybetween the cam members and the inner surfaces of second linger means 44.

This pressure is then transmitted to lsecond finger means 44 causing them to move laterally toward fingers 43 thus exerting pressure on the plates between the surfaces of the fingers 43 and the second finger means 44.

Due to this c-amming action and the exertion of pressure by the cam on the second linger means 44- and the transmission of this pressure against the plate-s which are in the slots between the second finger means 44 and first finger means 43, the plates are held rigidly in position.

The plate holder with the plates 2-1 in position is ,nowplaced in the interior of `a brick mold cavity. As described labove, the mold cavity is now filled with aggregate. `I

The lever members or handles are now moved to the open position thereby rotating the cams on their raxes so as to release the pressure against the plates leaving them free in the mold cavity. p j A' The plate holder is now removed from the mold cavity, and the brick co-molded as described above.

As shown in FIG. 1 5, the edge surfaces of cam 47, second linger means 44 and the interior surfaces of fingers 43 are serrated. While this maybe desirable in some instances, l have found that the pressure exerted by cam 47 is great enough so that such serrations lare unnecessary.

FIGS. 12 and 13 show another modification :of my invention. Handle members S2 are rigidly attached to plate holding combs or jaws 53. Attached to and between said handle members 52 is an electromagnet 54, having a core 55. The plate holding combs or jaws `are provided with a plurality of fingers 56. Said plate holding combs and their lingers 56 are electromagnetically connected to the electromagnet 54. Upon energization of the magnet 54, the internal and external faces of fingers 56 will become magnetized. Met-al plates 21 are then placed across the vertical surfaces of fingers 56, as shown in FIG. 13.

The energized plate holder with plates attached is then' placed in the interior of an empty brickV mold cavity. After the cavity is lled with aggregate the electromagnet 54 -is deenergized, thereby demagnetizing the faces of the lingers 56 to release plates 21 from said lingers.

The plate holder is then removed `from the' mold cavity and the brick `co-molded as described above.

In certain instances it may `be desirable to provide shielding means 57 between the table surface 38 and the handle means of the plate holder in order to minimize dissipation of electromagnetic forces generated by the electromagnet 54 and placed upon the plate holder 53.

Although not shown, it is apparent that the plates may be held in position on fingers 56 by utilizing a vacuum `across the vertical faces of fingers 56. In this yform of the invention, the plates are held in position by the uti-liza` tion of negative air pressure and are released prior to removal of the plate holder by venting the vertical surfaces of lingers 56 to atmospheric pressure.

While I have described certain preferred embodiments of rny invention, many modications thereof may be made without departing from the spirit of the invention; and I do not wish to be limited to the specic structures herein shown and described, Ibut desire to avail myself of all variances which come ywithin the scope of the appended claims.

I claim:

1. A tool for placing metal plates in a brick mold cavity prior to introduction of aggregate into the same comprising a frame member, a plurality of plate engaging jaws each having a plurality of plate engaging fingers depending therefrom in spaced relation longitudinally of said jaw, certain of said fingers being mounted for limited edgewise movement longitudinally of said jaw toward and away from adjacent fingers, a cam mounted on `said jaw between said lingers having -limited movement for rotation into and out of plate clamping position relative thereto, and a lever connected with said cam to rotate said cam responsive to movement of said lever.

2. A tool for placing metal plates in a brick mold cavity prior to introduction of aggregate into the same comprising a frame member and a plate engaging jaw mounted on said frame member, said jaw having a plurality of depending plate engaging fingers thereon, said lingers being liat faced, aligned edgewise and having Vertical plate engaging side edges, certain of said fingers being mounted for limited edgewise movement longitudinally of said jaw toward and away from adjacent lingers, a cam mounted in said jaw between said lingers having limited movement for rotation into and out of plate clamping position relative thereto, and a lever connected with said cam to rotate said cam responsive to movement of said lever.

3. A tool for placing metal plates in a brick mold cavity prior to introduction of aggregate into the same comprising a frame member and a plate engaging jaw mounted on said frame member, said jaw having a plurality of depending plate engaging lingers thereon, said lingers being liat faced, aligned edgewise and having vertical plate engaging side edges, said fingers including a pair of fixed end lingers, a pair of fingers adjacent thereto mounted for limited edgewise movement toward and laway from said end lingers, a central cam mounted on said jaw between said lingers having limited movement for rotation into and out of plate clamping position relative thereto, and a lever connected with said cam to rotate said cam responsive to movement of said lever.

4. A tool for placing metal plates in a brick mold cavity prior to introduction of aggregate into the same comprising a frame member and a plate engaging jaw mounted on said frame member, said jaw having a plurality of depending plate engaging fingers thereon, said fingers being at faced, aligned edgewise and having vertical plate engaging side edges, said lingers including a pair of fixed end lingers, a pair of fingers adjacent thereto mounted for limited edgewise movement toward and away from said end lingers and a central cam member mounted on said jaw between said movable fingers for rotation between a position to press plates mounted between said cam member and movable lingers against the vertical side edges thereof and crowd said lingers toward said end lingers and a plate releasing position.

5. A tool for placing metal plates in ya brick mold cavity prior to introduction of aggregate into the same comprising a frame member and a plate engaging jaw mounted on said frame member, said jaw having a body portion U-shaped in cross section having a plurality of depending plate engaging lingers thereon, said lingers being flat faced, aligned edgewi-se 4and having vertical plate engaging side edges, said lingers including a pair of lixed end fingers, a pair of lingers adjacent thereto mounted on said body portion for limited edgewise movement toward and away from said end lingers and -a central cam member mounted on said body portion between said movable lingers for rotation between a position to Ypress plates mounted between said cam member and movable lingers against the vertical side edges thereof and crowd said lingers toward said end lingers and a plate releasing position.

References Cited in the tile of this patent UNITED STATES PATENTS 458,614 Buddenberg Sept. l, 1891 790,411 Watrous May 23, 1905 1,188,270 Hanson June 20, 1916 2,247,376 Heuer July 1, 1941 2,379,596 Seamans July 3, 1945 2,548,343 Brown Apr. 10, 1951 2,673,373 Heuer Mar. 30, 1954 2,723,875 Russell Nov. 15, 1955 2,732,607 Dodd Ian. 31, 1956 2,901,807 Helmerson Sept. 1, 1959 OTHER REFERENCES German application Serial No. Sch 15297, printed October 27, 1955 (KSOa 5), 3 pp. spec., 1 sht. dwg.

Claims

1. A TOOL FOR PLACING METAL PLATES IN A BRICK MOLD CAVITY PRIOR TO INTRODUCTION OF AGGREGATE INTO THE SAME COMPRISING A FRAME MEMBER, A PLURALITY OF PLATE ENGAGING JAWS EACH HAVING A PLURALITY OF PLATE ENGAGING FINGERS DEPENDING THEREFROM IN SPACED RELATION LONGITUDINALLY OF SAID JAW, CERTAIN OF SAID FINGERS BEING MOUNTED FOR LIMITED EDGEWISE MOVEMENT LONGITUDINALLY OF SAID JAW TOWARD AND AWAY FROM ADJACENT FINGERS, A CAM MOUNTED ON SAID JAW BETWEEN SAID FINGERS HAVING LIMITED MOVEMENT FOR ROTATION INTO AND OUT OF PLATE CLAMPING POSITION RELATIVE THERETO, AND A LEVER CONNECTED WITH SAID CAM TO ROTATE SAID CAM RESPONSIVE TO MOVEMENT OF SAID LEVER.