US1985115A - Method of making concrete blocks - Google Patents

Method of making concrete blocks Download PDF

Info

Publication number
US1985115A
US1985115A US1985115DA US1985115A US 1985115 A US1985115 A US 1985115A US 1985115D A US1985115D A US 1985115DA US 1985115 A US1985115 A US 1985115A
Authority
US
United States
Prior art keywords
core
aggregate
block
base
forming
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
Publication date
Application granted granted Critical
Publication of US1985115A publication Critical patent/US1985115A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B28WORKING CEMENT, CLAY, OR STONE
    • B28BSHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B3/00Producing shaped articles from the material by using presses; Presses specially adapted therefor
    • B28B3/02Producing shaped articles from the material by using presses; Presses specially adapted therefor wherein a ram exerts pressure on the material in a moulding space; Ram heads of special form
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C57/00Shaping of tube ends, e.g. flanging, belling or closing; Apparatus therefor, e.g. collapsible mandrels
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S425/00Plastic article or earthenware shaping or treating: apparatus
    • Y10S425/111Hollow block

Description

Dec; 18, 1934.
F. J. STRAUB METHOD OF MAKING CONCRETE BLOCKS Filed Oct. 20, 1931 2 Sheets-Sheet l A TTORNEY.
T. m E m Q 6%& m (B Q Wm 6 0 Z Dec. 18, 1934.
F. J. STRAUB METHOD OF MAKING CONCRETE BLOCKS 'ATTORNEY.
2 Sheets-Sheet 2 Filed Oct. 20, 1951 Patented Dec. 18, 1934 UNITED STATES- 1,985,115 METHOD OF MAKINGLCONCRETE BLOCKS Francis J. Straub, NewKensingtomfa.
Application October '20,
1931, Serial No. 569,908
3 Claims. (01. 25-155) My invention consists of an improvement in the process and manufacture of building blocks or the like made of pressed aggregate.
In such blocks the article is formed from a suitable aggregate as sand, gravel, vcinders, or other suitable material, mixed with cement and water and pressed into form Within a shaping mold. Y r
Ordinarily such blocks, of well known standard construction, are provided with core openings clear through their body portion from topto bottom. While such core openings are ordinarily of considerable advantage and utility, there are certain conditions of use and application in which they are objectionable because of extending entirely through the block. For instance, in the building of a wall with complete core openings extending vertically from bottom to top, the openings provide cavities into which more or. less mortar or other cementing material is apt to be deposited, resulting in loss. .Also, when a wall is laid up with the core openings continuously registering, there are a series of flue-like openings from bottom to top of each block, continuously through the wall.
It has been recognized as a desirable feature that in some cases the core openings should be segregated in each block, forming dead air spaces, and with a continuous covering top at the upper side of the block. Heretofore, the formation of such a closing wall has not been accomplished successfully, due to the frequent collapsing or rupture of the wall in separating the block from the terminal end of the core. While it is desirable that the core opening should'extend through the body of the block and terminate as closely as possible to the opposite outer surface, the formation of such a covering top, especially with an aggregate of usual plasticity and fragility, has been difficult and impossible in continuous operation with the resulting disturbance or collapsing of the core top wall.
In the practice of my invention I provide means for forming the core opening in connection with a core terminal capable of rotation whereby to effect disconnection or severance of the core top from the under side of the desired outer wall. By so doing, there is no sufiiciently strong adherence or suction, thus enabling separation of the formed block from the core. The invention is particularly applicable to the making of such blocks in a press mold, as distinguished from a tamp mold, and will be readily understood from the following description of the process followed with one preferred form of machine.
In the drawings:
Fig. 1 is a plan view ofa press mold showing the core forming elements in position;
Fig. 2 is a vertical sectional view on the line II-II of Fig. 1 showing the aggregate in pcsi tion within the mold around the cores, prior tothe final pressing operation;
Fig. 3. is asimilar view showing the pressing head or platen of the cores iii-depressed position;
Fig. 4 is adetail view of .the rotating mechanism for'the coreterminal, just prior to release of pressure; v g
, Fig. 5 is a plan view of Fig. 4;
Fig. 6 is a view similar to Fig. 4 after release of pressure and rotation of the core terminal;
Fig. 7 is a sectionalperspectiveview of a block resulting from the practice of my invention.
In the drawings, 2 is the surrounding forming mold of conventional form and dimensions for the making of, for instance, an 8 X 8" x 16 block. Mold 2, which may be provided with a suitable interior lining, as shown, is mounted on the bottom plate or base 3 and is provided with a resiliently mounted bottom board or base 4 between the base 3 and the usual pallet 5. :25
Base 4 is mounted upon a series of supporting springs 60f any suitable construction whereby it may be depressed to the desired extent'under pressure of the aggregate from the pressing head or platen 7 The latter is provided with a central stem or rod 8 or other suitable construction, and is-actuated by well understood mechanism not herein necessarily further shown. I
For the purpose of providing the closed top core opening or openings I utilize one or more sheet metal cores!9 secured to base 4,"as at 10, and provided at their upper ends with inwardly inclined terminal tops 11. The main cores as 'thus made are preferably rectangular, in form,
or of modified generally rectangular shape as de- 40 sired, and the inner edges of the terminals 11 are curved to provide a circular opening 12. Within such opening, and closely interfitting therein, is the circular slightly coniform terminal disk 13, for partial rotation within the annulus 12. Disk 13 is secured to the upper end of a stem 14 which extends downwardly through the depressible base 4 and stationary base 3.
The disk 13 is also preferably provided with a downwardly extending guiding shell 15 and a transverse bearing washer 16 resting upon a series of rolling balls 17, for rotation on the upper surface of base 4, Stem 14 extends downwardly through bases 4 and 3 for guiding engagement thereby, so that when head 7 is lowered on the 2 upper surface of the filled-in aggregate, it will compress the main body of the block against supporting resistance of the relatively stationary pallet 5 and will depress terminal 13 with the outer core member 911 as base 4 is lowered against the re-acting pressure of springs 6.
It is desirable upon release of pressure of head 7, and prior to removal of the finished block by elevation of base 4 by the usual well known mechanism, that terminal 13 be rotated a sufficient amount to effect complete separation and avoidance of suction adherence between the terminal and the inner under face of the pressed aggregate forming the core covering wall a of the block A.
For such purpose I have provided a laterally acting turning arm 18 extending from post 14, or from a bracket 19 thereon, by which, when'arm 18 is thrust around in the manner of alever, it will rotate the post and terminal 13 a sufficient distance to effect the desired'separation. -Such operation is facilitated upon release of pressure of head 7 and reduction of frictional resistance by the pressed aggregrate against the core top.
Extending upwardly from base 3 is a bracket 20 having an overreaching inclined guiding or cam arm 21. Pivotally mounted at the upper inner side of bracket 20, as at 22, is a shifting arm 23, between which and the bracket is a spring 24 of sufficient strength to thrust arm 23 outwardly against lever arm 18 upon termination of the fric-' tional resistance against top 13.
The spring action thus applied will rotate the post 14 and its cap immediately upon release of the pressure of head '7 and simultaneously with the re-acting pressure of springs 6. Such springs thus effect the initial upward movement of the formed block and the main core 9, the terminal 13 and post 14 moving upwardly at the same time and rate to a limited extent, as in Fig.2.
At the termination of such upward movement of the post, arm 18, which has been thrust outwardly to the position shown in dotted lines in Fig. 5, will have been thrust into contact with the lower inner inclined face of fender 21. Then, upon the upward movement of post 14 continuing by action of springs 6, the inclined fender 21 acting as a cam, it will effect reverse rotation of the post and its cap, bringing the arm 18 backwardly to its original position, at a correspondingly higher level, as indicated at 18a, Fig. 4.
Prior to upward movement of bottom board 4 it is temporarily held against lifting spring pressure by any suitable means, as latches 25 pivotally mounted on pins or rods 26 and adapted to engage arresting shoulders 27 of base 3. Latches 25 may be manually released and re-engaged by rotating rods 26, or by any suitable automatic mechanism as preferred.
,ing a closed top core In raised position cap 13 will therefore have been positively thrust in one rotating direction and then in the other by the corresponding rotations of the post. The block being then removed upwardly from the mold by usual elevation of pallet 5, readily separates from the core because of the negative vacuum conditions and reduced friction and adhesion. The formed block may thus be readily pushed upwardly from the mold, which is then charged with fresh aggregate and the operation just described is repeated..-
The construction of the machine and the advantage of its method of operation, and especially of the resulting product, will be readily understo'od and appreciated from the foregoing description. It is comparatively simple, economical, capable of normally rapid production and ouput, and results in a cored block having a comparatively thin surface wall at the top of undisturbed normally strong condition, capable of hardening by either natural or artificial evaporation.
It will be understood that the method may be utilized in making a single or plural core opening block, and that the machine may be variously modified in construction and detail design by the skilled mechanic to adapt it to various shapes, dimensions or designs of blocks, slabs, etc., and that all such changes are to be understood as contributing to the invention within the following claims.
What I claim is:
1. In the manufacture of concrete building blocks of plastic aggregate the method of forming a closed top core aggregate against a fixed resistance and around a receding inner forming surface, releasing pressure on the aggregate, and then imparting rotary wiping treatment to the inner surface of the core top.
2. In the manufacture of concrete building blocks of plastic aggregate the method of formconsisting in pressing the aggregate against a fixed resistance and around and against a receding inner forming surface, releasing pressure on the aggregate, and then imparting rotary wiping treatment to the inner surface of the core top.
3. In the manufacture of concrete building blocks of plastic aggregate the method of forming a closed to-p core consisting in pressing the aggregate against a fixed resistance and around and against an inner receding Wall-forming surface, releasing pressure on the aggregate, maintaining the inner wall-forming surface stationary, and then imparting rotary wiping treatment to the inner surface of the core top.
FRANCIS J. STRAUB,
consisting inpressing the
US1985115D Method of making concrete blocks Expired - Lifetime US1985115A (en)

Publications (1)

Publication Number Publication Date
US1985115A true US1985115A (en) 1934-12-18

Family

ID=3426790

Family Applications (1)

Application Number Title Priority Date Filing Date
US1985115D Expired - Lifetime US1985115A (en) Method of making concrete blocks

Country Status (1)

Country Link
US (1) US1985115A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2584776A (en) * 1947-04-22 1952-02-05 Edward A Woznuk Mold for pressure forming of compositions
US2652768A (en) * 1951-07-09 1953-09-22 Jose H Moreno Cooking pan
US2741007A (en) * 1948-11-16 1956-04-10 Locatelli Antonio Vittorio Device for the formation of compressed building elements by means of the expansion of tubes, sacks or other elements made of flexible material within rigid forms
US3127459A (en) * 1962-01-11 1964-03-31 Harbison Walker Refractories Process and apparatus for making perforated bricks
US3931952A (en) * 1972-01-19 1976-01-13 Interform, Inc. Multiple concrete form apparatus
US4383966A (en) * 1981-06-29 1983-05-17 Phillips Petroleum Company Method and apparatus for forming a flange on thermoplastic tubing
US5183616A (en) * 1989-11-07 1993-02-02 Hedrick Concrete Products Corp. Method for making antiqued concrete cored bricks and capping bricks

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2584776A (en) * 1947-04-22 1952-02-05 Edward A Woznuk Mold for pressure forming of compositions
US2741007A (en) * 1948-11-16 1956-04-10 Locatelli Antonio Vittorio Device for the formation of compressed building elements by means of the expansion of tubes, sacks or other elements made of flexible material within rigid forms
US2652768A (en) * 1951-07-09 1953-09-22 Jose H Moreno Cooking pan
US3127459A (en) * 1962-01-11 1964-03-31 Harbison Walker Refractories Process and apparatus for making perforated bricks
US3931952A (en) * 1972-01-19 1976-01-13 Interform, Inc. Multiple concrete form apparatus
US4383966A (en) * 1981-06-29 1983-05-17 Phillips Petroleum Company Method and apparatus for forming a flange on thermoplastic tubing
US5183616A (en) * 1989-11-07 1993-02-02 Hedrick Concrete Products Corp. Method for making antiqued concrete cored bricks and capping bricks

Similar Documents

Publication Publication Date Title
US1633531A (en) Spray disk and method and apparatus for makino the same
US1985115A (en) Method of making concrete blocks
CN206760598U (en) A kind of cake making square dies
US2801946A (en) Method of making containers of glass fiber mat provided with end closures
US1987721A (en) Method of making building blocks
US1885303A (en) Method and apparatus for molding plastics
CN208133234U (en) The compacting tool set of kylix processing
US2448271A (en) Vitrified clay pipe joint
CN107791423A (en) A kind of dry solid sleeve insulator and its manufacture mould and manufacture method
US3225414A (en) Apparatus for slip casting ceramic electrical ware
US1177178A (en) Process of forming paper bottles.
US1375950A (en) Method and apparatus of forming concrete pots
CN209718099U (en) A kind of precast concrete roof-drain module
CN206373320U (en) Upper plunger tip and die sinking sychronisation
US1586295A (en) Mold for brick and building blocks
CN108724438B (en) Sanitary ceramic powder punch forming process and punch forming die used by same
CN210233814U (en) Injection mold with time delay core pulling mechanism
CN106003371B (en) A kind of processing technology of ecological water storage brick
US2003702A (en) Concrete block making apparatus
US2293172A (en) Device for embossing the sides of ceramic pots
CN206425493U (en) A kind of Sha Tong mechanisms of full-automatic moulding machine
US3164876A (en) Bell tamper for concrete pipe
CN210976599U (en) Triangular lining template for water dripping line
US2779989A (en) Pottery press
JPS5510328A (en) Forming method of bent pipe utilizing liquid pressure