US2460167A

US2460167A - Concrete block making machine

Info

Publication number: US2460167A
Application number: US738772A
Authority: US
Inventors: Alf G Carlsen
Original assignee: Individual
Current assignee: Individual
Priority date: 1947-04-02
Filing date: 1947-04-02
Publication date: 1949-01-25
Anticipated expiration: 1966-01-25

Description

Jan. 25, 1949. e. CARLSEN CONCRETE BLOCK MAKING MACHINE 3 Sheets-Sheet l Filed April 2, 1947 Mm I INVENTOR ALF GI CARLSEN ATTOR NEY Jan. 25, 1949. c s N 2,460,167

CONCRETE BLOCK MAKING MACHINE Filed April 2, 1947 3 Sheets-Sheet 2 INVENTOR ALF G CARLSEN ATTORNEY Jan. 25, 1949. A. G.- CARLSEN 2,460,167

CONCRETE BLOCK MAKING MACHINE Filed April 2, 1947 3 Sheets-Sheet 3 INVENTOR ALF vG. CARLSEN ATTOR N EY ing a vibration for settling the concrete being molded within the molds.

Pallets 35 rest upon the longitudinal supports and I3. These pallets also rest upon the movable guide bars 36 located on either end of the frame. The guide bars 36-have upwardly extending guide members 31 which contact either side of the pallets 35. Extending beyond and forming part of the supports jl3 are operating fingers 38 for moving the guide bars 36. These fingers operate in the cut-out portion 39 of the guide bars. The guide bars are mounted to the frame t through a slot 40 formed therein and working over the holding bolts 4|, which are fixedly secured to the frame. Y i

I will now describe the operation o lynew and; improved concrete block making machine. First the operating lever 21 is brought to thetpositionshown in Figures 1 and 4-and is held there by the hook 42, which is secured. to the frame I, This causes the connecting links 2| to pull the guides 14 towards the center of the machine. This pulls the mold members lll'towardsthe' center mold members It). The spacers l2 and are the same thickness as the pallets 35,, therefore, the finished block 43 will be the same thickness asthe molds when molding is completed; The length of the individual mold members 10 and [8 may vary in length as indicated on the drawings, and they are spacedapart transversely by the removable cross members 44 as illustrated in Figure 1.

In themolding of the concrete blocks one or more methods may be employed, The concrete is poured and tamped down by hand being levelled atthe same'tima, Where desirable it may be vibrated by. rotating'the crank 34 which rotates the ratchetwheels 3| slowly raising the frame I on the inclined suriace of the ratchet,

then dropping said frame/over the endof the.

members It! the fingers 38 of the plates I3 engage the end of the slot 39 of the guide bars 36, which moves the pallets and the molded blocks away from the center mold members llltolthe position shownin'; Figure '2. When this is. done the ends 45 of the pallets maybe grasped an'd pulled lengthwise.

A guide member 46 is fixedly secured to the opposite end of the pallet and'is guided between the mold members Ill and l8'as illustrated at 41, Figure 2, preventing contact of the blocks 43 with the sides of the mold members while removing the same lengthwise of the machine. The guide members 31 of the guide bars 36 also guide the pallets inthis operation. The spacing ofthe pallets between the mold members is especially important where knobs 48 are being formed on the blocks, thus preventing breaking the same ofi as the sar'ne'are being removed from the machine.

Iihave not illustrated where the pallets are removed to after taken from the machine, but they come out onto a suitable receiving table or conveyor and are removed to a drying rack where the blocks are dried and cured.

I do not wish to be limited to the exact mechanical construction as other mechanical equivalents mentioned support in spaced relation from said fixed mold member and movable with said second support for movement relative to said fixed mold and between said mold members for supporting the molded plastic material, and means for moving said movable mold member and its support relative to said pallet and said fixed mold member and simultaneously moving said pallet relativeto saidfixed mold member to free the pallet and the molded objects thereonlirom'between said mold members.

2., A machine as set forth in claim 1, wherein the means for moving the mold member and pallet also includes means for vibrating said mold members and said pallet as a unitto compact the plastic material onsaid pallet between'the mold members. z g I 1,

3. A machine asset forth in claim 1, wherein said second-mentioned support is movably mounted on a base and. the means formoving the mold memberand pallet includes an element for cooperating with a vibratory member mounted on said base for vibrating said supports to compact the plastic material on said pallet and between said moldmembers 4. A machine as set forth in claim 1, wherein the means for moving the mold member support and pallet comprises a crank and a link con: nected to said mold member, a crank and a delayed action connection between said movable moldmember and said pallet. V

5. A machine as set forth in claim 1, wherein the moving means includes a crank connected with the support for. the mold member and mounted on a shaft, and a vibratory member in vibratory relation with said shaft for vibrating the shaft so thatthe: vibrations will .be transmitted to compact the plastic. material.

6. A machine-formolding plastic material such as concrete and which comprises" a support, a mold member fixed on said support and centrally thereof, opposed second movable supports in spaced relation on opposite sides of saidfixed support opposed mold members mounted on the movable supports for movement relative to said fixed moldmember, pallets supported by andbetween said fixed-mold member and said movable mold members, iorsuppcqrting the molded plastic material, and means for moving vsaid secondmentioned supports and movable mold members in opposite directions and relative -to their respective pallets an'd'saidfixed mold member and simultaneously moving said pallets iri-opposite directions and relative to said fixed mold member" vibrating said movable supports and movable 5 pact the plastic material on said pallets between the mold members.

8. A machine as set forth in claim 6, wherein the means for moving the movable supports and mold members and the pallets comprises a bell crank including an extended arm forming an operating handle and oppositely extending crank arms, links connecting said crank arms with said movable supports, and delayed action connections between each of said movable supports and movable mold members and their respective pallets.

9. A concrete block making machine comprising a frame, a centrally disposed longitudinal support fixed to said frame, a series of mold members, spaced apart end to end, fixed to said 15 Number fixed support, movable supports spaced from the fixed supports and running longitudinally on opposite sides of said fixed support, spaced apart mold members mounted on said movable support and arranged longitudinally of the frame, remov- 20 able cross members disposed transversely of and REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Name Date 916,667 Calkins Mar. 30, 1909 FOREIGN PATENTS Number Country Date 260,554 Italy Sept. 29, 1928