Search Images Maps Play YouTube News Gmail Drive More »
Sign in
Screen reader users: click this link for accessible mode. Accessible mode has the same essential features but works better with your reader.

Patents

  1. Advanced Patent Search
Publication numberUS2732706 A
Publication typeGrant
Publication dateJan 31, 1956
Filing dateAug 23, 1952
Publication numberUS 2732706 A, US 2732706A, US-A-2732706, US2732706 A, US2732706A
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Friedman
US 2732706 A
Abstract  available in
Images(1)
Previous page
Next page
Claims  available in
Description  (OCR text may contain errors)

Jan. 31, 1956 H. FRIEDMAN INTERLOCKING PRE-CAST BUILDING BLOCKS Filed Aug. 23, 1952 INVENTOR.

HERMAN FRIEDMAN INTERLOCKING PRE-CAST BUILDING BLOCKS Herman FriedmamHollywood, Fla. Application August 23, 1952, Serial No. 305,985 2 Claims. (CI. 72-38) This invention relates to new in interlocking building blocks.

More particularly, the present invention proposes the construction of an improved building block which can be economically pre-cast of concrete and laid without mortar or cement one block on another without staggering and which when so laid can be interlocked block by block by the mere driving in of an interlocking wedge.

Another object of the present invention proposes forming the building blocks with deep spaced recesses and projections having grooves adapted to receive an interlocking wedge or key and a plurality of mating male plugs and female sockets on the blocks so thatthe blocks can be secured interlocked.

Still further, the present invention proposes constructand useful improvements ing the building blocks so that when laid one upon the n other they will fit together in such a way as to provide a maximumof strength to the wall surface formed of such blocks.

As a further object, the present invention proposes arranging the interlocking wedge or key receiving grooves at the sides of the blocks so that wedges can be driven conveniently as the blocks are laid and the exterior appearance of the blocks will not be changed or marred.

The present invention further proposes a novel arangement of the building block structure which can be used either in straight or flush blocks or in siding blocks.

For further comprehension of the invention and of the objects and advantages thereof, reference will be had to the following description and accompanying drawings, and to the appended claims in which the various novel features of the invention are more particularly set forth.

In the accompanying drawings forming a material part of this disclosure:

Fig. l is a perspective view of two building blocks constructed and arranged and fastened together in accordance with the present invention.

Fig. 2 is a sectional view taken on line 22 of Fig. 1.

Fig. 3 is a perspective view of the locking wedge or key shown in Fig. 1 and Fig. 2.

Fig. 4 is a view similar to Fig. 3 but showing a modified form of the wedge.

Fig. 5 is a perspective view of a single block illustrating a modification of the present invention.

Fig. 6 is a view similar to Fig. 2 but illustrating a further modification of the present invention.

The building blocks, in accordance with the first form of the invention illustrated in Figs. 1 and 2, is shown with two blocks in interlocked position and locked together by locking wedges or keys 16.

Blocks 15 may be made of any material but are particularly adapted to be pre-cast easily and economically of concrete. Each block is generally rectangular in shape having exterior facing sides 17 and 18 and interior ends or sides 19 and 20 which abut the adjacent blocks and are thereby concealed as a line or wall of blocks are laid.

2 Each block 15 has an upper face 21 and a lower face 22 with upstanding projections or projection tongues .23 extending from the upper face 21 and corresponding recesses 24 in the lower face 22 to receive the projections 23 of the block below.

In addition, a plurality of spaced openings or female sockets 25' are formed in the upper face 21 of each block and mating male plugs 26 correspondingly spaced extended from the lower face 22 of each block. When one block is laid on top of another, as shown in Figs. 1 and 2, the male plugs 26 of the upper blocks are seated in the spaced openings or female sockets 25 in the upper face 21 of the lower block and the upstanding projections 23 extending from the upper face of the lower block are seated in the corresponding recesses 24 in the lower face 22 of the upper block. The blocks fit tightly together with no space left for mortar or cement, which is unnecessary in the laying of these blocks. Likewise it is not necessary to stagger the blocks, they can be laid one upon the other, although they may be staggered if desired, as is apparent from Figs. 1 and 2.

Locking grooves 27 are provided in the outwardly facing sides 28 of the upstanding projections 23 on each block and corresponding locking grooves 29 are formed in the inwardly facing side walls 30 in the recesses 24 in the lower face 22 of each block. When the blocks are laid one on the other and the projections 23 are seated in the recesses 24, the locking grooves 27 and 29 of each recess and projection seated therein are aligned to receive a locking wedge or key 16. The wedges or keys 16 are driven in the grooves 27 and 29 from the side as the blocks are laid.

The locking wedges or keys 16 are rectangular bars but a channel shaped locking wedge or key 31 as shown in Fig. 4 may be substituted to reduce material costs. The locking wedges when driven in extend laterally of the blocks holding the blocks together and reinforcing them laterally.

The modification illustrated in Fig. 5 is characterized by the provision of deep projection seating recesses 32 and shallower projections 33 further to reduce costs without substantially impairing the strength of the block.

Either plain, straight or flush blocks may be constructed and arranged in accordance with the present invention or siding blocks such as block 34 shown in Fig. 6. The modification of the present invention illustrated in Fig. 6 is characterized by the provision of a block 35 having two oppositely disposed faces 36 and 37 and a pair of spaced projections 38 and 39 extending substantially above one of the faces, the upwardly disposed face 26. A pair of corresponding spaced recesses 40 and 41 are provided in the face 37 and a keyway groove 42 is formed in the like sides 43 and 44 of each of the projections 38 and 39 respectively. The grooves 42 extend lengthwise of the projections and substantially parallel to the faces 36 and 37. Keyway grooves 45, preferably like grooves 42 are provided in the sidewalls 46 and 47 of the recesses 40 and 41 respectively, these sidewalls 46 and 47 corresponding to the grooved sides 43 and 44 of the projections 38 and 39.

In addition, face 36 of block 35 is provided with a plurality of spaced female sockets 49.

The upper siding block 34 shown in Fig. 6 has a pair of projection seating recesses 50 in its lower face 51 and keyway grooves 52 in sidewalls 53 and 54 of these recesses. The keyway grooves 52 align with grooves 42 in the projections on block 35 and a key 55 is driven in each set of aligning grooves to lock the blocks together, the blocks being held in alignment by male plugs 56 extending from the lower face 51 of block 35 into the female sockets 49 on block 35.

While I have illustrated and described the preferred embodiments of my invention, it is to be understood that I do not limit myself to the precise constructions herein disclosed and the right is reserved to all changes and modifications coming within the scope of the invention as defined in the appendeed claims.

Having thus described my invention, what 1 claim as new and desire to secure by United States Letters Patent is:

1. A building block structure comprising two superposed blocks each having an upper face and a lower face, projections extending from the upper faces and recesses in the lower faces complemental to said projections, a locking keyway groove in one side of each projection disposed substantially parallel to said faces, and a keyway groove in one sidewall of each recess complemental to the keyway groove in each projection, the projections on the upper face of the lower block being seated in the recesses in the lower face of the upper block and the keyway groove in each recess sidewall aligned with the keyway groove in the projection seated therein, and a locking key in the aligned grooves locking the blocks together, the lower face of each of said blocks also having a plurality of spaced male plugs perpendicular to said grooves and the upper face of each block having a plurality of like spaced female sockets, the male plugs on the upper block being seated in the female sockets in the lower block to provide an interlock between the blocks.

2. A building block structure comprising two superposed blocks, each having a square body having top,

bottom and side face portions, vertical longitudinal projections extending upwardly from the top face portion and extending from end to end thereof, said projections being spaced inwardly from the side face portions thereof and having horizontally disposed key grooves in their sides extending the length of the projections, said body having vertical grooves in the bottom face portion thereof corresponding in depth and width to the height and width of said projections, the walls of said latter grooves having horizontal key grooves midway the height thereof extending the length of said walls, said top face portion having spaced sockets intermediate the projections and outwardly thereof, and vertical plugs projecting from the bottom face portion and being shaped and spaced to correspond to the shape and spacing of the sockets in the top face portion, said key grooves being in aligned position in the superposed blocks, and key members in said aligned key grooves to prevent separation of the blocks, said top and bottom face portions when contacting in said superposed blocks concealing the plugs and sockets from view.

References Cited in the file of this patent UNITED STATES PATENTS 1,351,133 Scharwath Aug. 31, 1920 1,459,189 Swanson June 19, 1923 1,465,421 Clouser et al. Aug. 21, 1923 1,652,305 Frewen Dec. 13, 1927 1,667,160 Kleinfeldt Apr. 24, 1928 2,201,110 Makram May 14, 1940 2,460,330 Baccaro Feb. 1, 1949 FOREIGN PATENTS 11,608 Switzerland of 1896 493,210 France of 1919

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US1351133 *Jan 15, 1918Aug 31, 1920Scharwath John AInsulating-conduit
US1459189 *Mar 13, 1919Jun 19, 1923Guss A SwansonBuilding block
US1465421 *Apr 12, 1921Aug 21, 1923Clouser Harry ETie for reenforced concrete construction
US1652305 *Apr 9, 1927Dec 13, 1927Frewen Edmond JosephMethod of constructing walls
US1667160 *Mar 30, 1927Apr 24, 1928Edward H KleinfeldtWall construction
US2201110 *Jun 16, 1937May 14, 1940Makram Latif TewfikBrick or block
US2460330 *May 8, 1944Feb 1, 1949Baccaro Frank PBuilding block
CH11608A * Title not available
FR493210A * Title not available
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3759003 *Dec 23, 1971Sep 18, 1973Wilson JPinned joint
US5899038 *Apr 22, 1997May 4, 1999Mondo S.P.A.Laminated flooring, for example for sports facilities, a support formation and anchoring systems therefor
US5938050 *Feb 14, 1996Aug 17, 1999Hewlett-Packard Co.Guide rail having similarly sized ribs and shoulder
US6813113Feb 25, 1999Nov 2, 2004Hewlett-Packard Development Company, L.P.Data cartridge import/export drawer having three-element, two-configuration slide
US6892498 *Dec 4, 2002May 17, 2005James D. RomanInterlocking construction system
US7721503Jul 9, 2007May 25, 2010Valinge Innovation AbLocking system comprising a combination lock for panels
US7802411Jul 9, 2007Sep 28, 2010Valinge Innovation AbMechanical locking system for floor panels
US7841144Mar 30, 2005Nov 30, 2010Valinge Innovation AbMechanical locking system for panels and method of installing same
US7841145Aug 10, 2007Nov 30, 2010Valinge Innovation AbMechanical locking system for panels and method of installing same
US7841150Jul 9, 2007Nov 30, 2010Valinge Innovation AbMechanical locking system for floorboards
US7861482Jun 29, 2007Jan 4, 2011Valinge Innovation AbLocking system comprising a combination lock for panels
US7866110Jul 9, 2007Jan 11, 2011Valinge Innovation AbMechanical locking system for panels and method of installing same
US7908815Jul 11, 2007Mar 22, 2011Valinge Innovation AbMechanical locking of floor panels with a flexible bristle tongue
US7930862Jan 5, 2007Apr 26, 2011Valinge Innovation AbFloorboards having a resilent surface layer with a decorative groove
US7980041Aug 25, 2010Jul 19, 2011Valinge Innovation AbMechanical locking system for floor panels
US8033074May 27, 2010Oct 11, 2011Valinge Innovation AbMechanical locking of floor panels with a flexible bristle tongue
US8042311Dec 4, 2007Oct 25, 2011Valinge Innovation AbMechanical locking system for panels and method of installing same
US8079195 *Nov 11, 2005Dec 20, 2011Raymond Walter CablesModular blocks and structures made therefrom
US8079196Dec 7, 2010Dec 20, 2011Valinge Innovation AbMechanical locking system for panels
US8112967May 15, 2009Feb 14, 2012Valinge Innovation AbMechanical locking of floor panels
US8181416Jun 13, 2011May 22, 2012Valinge Innovation AbMechanical locking system for floor panels
US8234830Feb 3, 2011Aug 7, 2012Välinge Innovations ABMechanical locking system for floor panels
US8245478Mar 11, 2011Aug 21, 2012Välinge Innovation ABSet of floorboards with sealing arrangement
US8341914Oct 22, 2010Jan 1, 2013Valinge Innovation AbMechanical locking of floor panels with a flexible bristle tongue
US8341915Oct 21, 2005Jan 1, 2013Valinge Innovation AbMechanical locking of floor panels with a flexible tongue
US8353140Nov 7, 2008Jan 15, 2013Valinge Innovation AbMechanical locking of floor panels with vertical snap folding
US8359805Aug 1, 2011Jan 29, 2013Valinge Innovation AbMechanical locking of floor panels with a flexible bristle tongue
US8381477 *Jul 11, 2008Feb 26, 2013Valinge Innovation AbMechanical locking of floor panels with a flexible tongue
US8387327Oct 5, 2011Mar 5, 2013Valinge Innovation AbMechanical locking system for floor panels
US8448402Dec 16, 2011May 28, 2013Välinge Innovation ABMechanical locking of building panels
US8499521Nov 7, 2008Aug 6, 2013Valinge Innovation AbMechanical locking of floor panels with vertical snap folding and an installation method to connect such panels
US8505257Jan 30, 2009Aug 13, 2013Valinge Innovation AbMechanical locking of floor panels
US8511031Jul 18, 2012Aug 20, 2013Valinge Innovation AbSet F floorboards with overlapping edges
US8528289Mar 21, 2012Sep 10, 2013Valinge Innovation AbMechanical locking system for floor panels
US8544230Dec 23, 2010Oct 1, 2013Valinge Innovation AbMechanical locking system for floor panels
US8544234Oct 25, 2012Oct 1, 2013Valinge Innovation AbMechanical locking of floor panels with vertical snap folding
US8572922Jul 2, 2012Nov 5, 2013Valinge Flooring Technology AbMechanical locking of floor panels with a glued tongue
US8596013Apr 3, 2013Dec 3, 2013Valinge Innovation AbBuilding panel with a mechanical locking system
US8627862Jan 30, 2009Jan 14, 2014Valinge Innovation AbMechanical locking of floor panels, methods to install and uninstall panels, a method and an equipment to produce the locking system, a method to connect a displaceable tongue to a panel and a tongue blank
US8640424Aug 8, 2013Feb 4, 2014Valinge Innovation AbMechanical locking system for floor panels
US8650826Jul 11, 2012Feb 18, 2014Valinge Flooring Technology AbMechanical locking system for floor panels
US8677714Feb 4, 2013Mar 25, 2014Valinge Innovation AbMechanical locking system for panels and method of installing same
US8689512Oct 25, 2007Apr 8, 2014Valinge Innovation AbMechanical locking of floor panels with vertical folding
US8707650Sep 14, 2011Apr 29, 2014Valinge Innovation AbMechanical locking system for panels and method of installing same
US8713886Nov 2, 2009May 6, 2014Valinge Innovation AbMechanical lockings of floor panels and a tongue blank
US8733065Mar 21, 2012May 27, 2014Valinge Innovation AbMechanical locking system for floor panels
US8763340Aug 14, 2012Jul 1, 2014Valinge Flooring Technology AbMechanical locking system for floor panels
US8763341Nov 14, 2013Jul 1, 2014Valinge Innovation AbMechanical locking of floor panels with vertical folding
US8769905Aug 14, 2012Jul 8, 2014Valinge Flooring Technology AbMechanical locking system for floor panels
US8776473Feb 3, 2011Jul 15, 2014Valinge Innovation AbMechanical locking system for floor panels
US8826622Jan 29, 2013Sep 9, 2014Flooring Industries Limited, SarlFloor panel having coupling parts allowing assembly with vertical motion
US8844236Dec 27, 2012Sep 30, 2014Valinge Innovation AbMechanical locking of floor panels with a flexible bristle tongue
US8857126Aug 14, 2012Oct 14, 2014Valinge Flooring Technology AbMechanical locking system for floor panels
US8869485Dec 7, 2007Oct 28, 2014Valinge Innovation AbMechanical locking of floor panels
US8887468May 4, 2012Nov 18, 2014Valinge Flooring Technology AbMechanical locking system for building panels
US8898988Aug 27, 2013Dec 2, 2014Valinge Innovation AbMechanical locking system for floor panels
Classifications
U.S. Classification52/586.1
International ClassificationE04B2/08, E04B2/04, E04B2/02
Cooperative ClassificationE04B2002/0247, E04B2/08, E04B2/04
European ClassificationE04B2/04, E04B2/08