US1819741A - Brick making machine - Google Patents

Description

Aug. 18, 1931.

R. P M. DAVIS BRICK MAKING MACHINE Filed Nov. 1. 1930 2 Sheets-Sheet 1 Aug. 18, 1931. R. P. M. DAVIS BRICK MAKING MACHINE Filed Nov. 1. 1950 2 Sheets-Sheet 2 Patented Aug. 18, 1931 Uri" res aoY r. M. DAVIS, or MOUNT UNION, PENNSYLVANIA BRICK MAKING MACHINE Application filed November 1, 1930. Serial No. 492,791.

My invention relates to machines for making brick and more particularly to means for placing the molded brick upon the pallets.

Heretofore it has been the practice to fill the mold on a bed plate. and then invert or turn the mold over in depositing it upon the pallet. Another method hasbeen to fill the mold with the brick making material. or

mud while the mold rests upon a plunger and then remove the brick by pushing or lifting the same off the plunger. These methods have proven particularly objectionable when soft mud is used, due to the fact '15 that the mud settles during the tiltingor inverting step and where the brick is lifted or pushed from the plunger a large percentage of broken, misshapen and otherwise damaged brick are produced.

Still another method has been to drop the mud directly into a mold resting on a pal: let. This proved objectionable due to the comparatively rough, worn and misshapen condition of the general run of pallets, causing defects in the brick. To overcome this it was proposed to employ a relatively thin metallic liner or cover plate between the mold and the pallet for receiving the charge of mud. In the practice of this 3 method it was considered necessary to make the plate of thin sheet material such as tin so that during the passage of the filled mold off the cover plate, when the transfer of the latter to the pallet was being effected, the gap represented by the thickness of the plate would be negligible. It was also deemed necessary to cut this thin plate away adjacent to and just back of the body thereof on which the mold rested during the filling operation, for the purpose of providing a large transverse aperture through which excess mud escaping from the top of the mold might escape. In order to'prevent buckling of the thin plate due to the presence of the is mud aperture, it was necessary to provide a reinforcement extending centrally across the aperture.

The method last described proved unsatisfactory after a comparatively few opera tions due to the fact that the continuous .carried forward by the mold and become 5 trapped between the latter and the cover platen Theobject of my invention is to overcome the objections mentioned by providing a cover plate which is free from the fore- 3 going obj ections,.and which is provided with means for readily anchoring the plate to the brick machine frame.

ther and further objects and advantages of my inventionwill be apparent as the specification is considered in connection with the accompanying drawings, in which:

Figure 1 is a side view of the-machine partly in section, the mold being shown in full lines in position assumed as it is pushed 7 onto the liner plate and in dotted lines in its advanced or filling position, the pedestal being shown in lowered or inoperative positlon; a

Figure 2 is a view similar toFigure 1,75 the mold being shown in full lines in filling position and the pedestal being shown in elevated or operative position;

Figure 3 is an end view; and

Figure 4 is a plan .view.

Referring more particularly to the. drawings'wherein like reference numerals refer to corresponding parts throughout the several views, 1' denotes a pair .of transversely disposed pallet supporting. rails suitably M mounted in the main frame of the brick making machine (not shown). Secured to one of the transverse rails 1 is a guide bar 2, and to this bar 2 a cover plate or liner plate 4- is bolted or otherwise suitably. se cured. This anchoring of thecover plate is effected by means of ribbons 21,,extending rearwardly from the corners of the rear edge 8 of-the plate and secured to the guide by bolts 15. The use of the side ribbons 21 for securing" the cover. plate in place, eliminates all central obstructions which might interfere with mold or palletqmovements and also provide the enlarged mud escape opemng 6.

The cover plate 4 is formed from a fiat smooth relatively thick sheet, preferably of steel, of suflicient width to slidably support the brick containing portion or compartments of a conventional mold 5, and as previously stated, is held in place by ribbons 21, of sufficient length to extend from the receiving station A to the filling station B of the machine. Any excess mud which may escape from the top of the mold escapes through the open space 6 between the anchoring ribbons 21. In order to preclude the possibility of either the mold 5 or pallet 7 catching on the rear edge 8 of the cover plate, as the mold and pallet are moved from one station to another, this edge 8 is beveled, as illustrated in Figure 4;. Long experiments have proven that a cover plate of approximately one quarter inch thickness must be employed in order that buckling under the constant impact of brick mud, will not occur.

For the purpose of facilitating movement of the mold 5 to and from various parts of the brick machine for filling, stripping, cleaning and other operations, not shown, the ends of the mold are notched or beveled, as at 18, to accommodate the reversely beveled rails 9, suitably mounted in the main frame of the brick machine.

In practice the mold is pushed along the tracks 9 by any suitable means, such as pusher arms 20, and on this rail are located a multiple of molds in the various positions required for filling, slicking, stripping etc. Intermittingly these molds are advanced forward along the rail, and in the process of advance pallets 7 are introduced on transverse tracks 1 which are on a level immediately below the lower surface of the mold. Lug 10 on themold, which extends below the lower surface of the mold comes in contact with the pallet as the mold moves forward, and the two will then advance together, the mold above and the pallet beneath the cover plate. The pallet rests upon and is pushed forward along the longitudinally disposed tracks 11.

As the mold and pallet are slid along to-the filling station B, they pass the open part 6 in the cover plate and come to rest above a reciprocable pedestal 12. This pedestal is then elevated by any suitable mechanism, not shown, from Figure 1 to Figure 2 position, thus tightly clamping the mold, cover plate and pallet together. After the filling operation, the pedestal drops to Figure 1 or inoperative position and the mold and pallet are again pushed forward to stripping station C. During this last step, the mold and brick therein slide off the forward end of the cover plate and are deposited directly upon the pallet, where the brick are ejected from the mold by any well known means, not shown. It will be noted that the gap 22 between the bottom of the filled moldand the top of the pallet is considerably greater than heretofore considered practicable. However, lengthy experiments have proven that the unsupported brick has no tendency to settle down into this gap during the transfer of the mold to the cover plate.

It will of course be understood that the relative horizontal planes of the mold tracks 9 and the pallet supporting tracks 1 and 11 are such that the bottom of the mold and the top of the pallet will be maintained in substantially the same horizontal plane with the cover or liner plate therebetween.

After the mold has been stripped from the brick at position the mold is returned to A position by any approvedmeans, not shown, and the cycle of operation just described is then repeated indefinitely.

Having thus described my invention, what I claim is:

1. A brick machine comprising a frame, a relatively thick smooth liner plate, spaced anchoring ribbons extending from the rear corner edges of said plate and attached to the frame, means for slidably supporting a mold and a pallet in contact respectively with the upper and lower surfaces of said liner plate, and means for engaging the pallet whereby when said mold is pushed across and beyond the end of said plate and out of contact therewith said pallet will move correspondingly and the mold will be deposited on the pallet,

2. In a brick machine, a relatively thick smooth liner plate for slidably supporting the brick in a brick mold, said plate having rearwardly extending ribbons for securing the plate to the frame, said ribbons being spaced to permit escape therethrough of surplus brick making material.

In testimony whereof I aflix my signature.

' ROY P. M. DAVIS.

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