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Publication numberUS349646 A
Publication typeGrant
Publication dateSep 21, 1886
Filing dateApr 30, 1886
Publication numberUS 349646 A, US 349646A, US-A-349646, US349646 A, US349646A
InventorsThomas H. Geigg
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
US 349646 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)

(No M6661.) 'I'. H. GRIGG.


No. 649,646; Y

Paten-'ted sept. 21, 1886.

lNv-ENTCH--l Vfwl'r-NEESE'E.




SPECIFICATION forming part of -Letters Patent No. 3495.646, dated September 21, 1886.

Application filed Api-i130, 1886. Serial No. 200,687. (No model.)

To all whom it may concern:

Be it known that I, THOMAS H. GRIGG, a citizen' of the United States, residing at Philadelphia, in the county of Philadelphia and 5 State of Pennsylvania, have invented certain new and useful Improvements in, Toy Building-Blocks; and I do hereby declare the following to be a full, clear, and exact description of the invention, reference being had to the accompanying drawings, which form part of this specification, in which- Figures 1, 2, and 3 are perspectives of diferent sizes of blocks embodying my improvement.

My improvements have reference to the toy building-blocks for which Letters Patent of the United States dated March. 4, 1884, No. 294,607, were granted to Chas. W. Frost.

My improvements have for their object to improve the construction and simplify the cost of the joint whereby said blocks are connected to each other. In said patent the joint is obtained by forming notches in the edges of the sides and end pieces of the blocks.

" My invention consists in the provision of a toy building-block consisting of a hollow rectangular block having four sides and a top piece, said top piece having intersecting grooves eX- tending from edge to edge thereof at right angles to each other, forming multiple squares or panels-adapted to receive the lower edges of other corresponding blocks.

Referring to the accompanying drawings, Figure l represents a whole block, Fig. 2 a

3 5 half-sized block, and Fig. 3 aquarter-sized block, constructed with my improvements.

In each block A-there is fitted a plateor top f piece, B, which is scored or grooved longitudinally in the whole and half sizes, and also transversely, as shown at C and D, thereby forming squares or panels E E. The outer edges of these projections should be somewhat within the vertical line of the inner side of each of the walls of the blocks, so as to permit free play, and the grooves should be somewhat wider than twice the thickness of the walls of the blocks, in order to prevent binding of the parts,and to permit the ready fitting together.

In fitting the blocks together to form the structure the lower edges of the blocks are 5c caused to enter the grooves in the top plateor plates of the block or blocks below. Said top piece may be secured in position by any suitable means in the blocks-as by glue or pinj ning.

I am aware of the fact that building-blocks have been made in which the upper side was grooved from edge to edge, said grooves being at or near the extreme edges of the block, and I do not, therefore, broadly claim a building- 6 block having grooves upon its upper side; but where these blocks are employed it is not possible to break joints, as is possible with my improved block.

What I claim as my invent-ion is- A hollow rectangular building-block having four sides and a top piece fitted therein, said top piece having intersect-ing grooves eX- tending from edge to edge thereof at right angles to each other, forming multiple squares or 7( panels, and adapted and designed to receive the lower edges of other corresponding blocks, substantially as shown and described.

In testimony that I claim the foregoing I have hereunto set my hand this 19th day of 7g April, 1886.


Witnesses: l


It is hereby eertified that the name of the assignee in Letters Patent No. 349,64( granted September 2l, 1886, upon the application of Thomas H. Grigg, of Phil: delphia, Pennsylvania, for an improvement in Toy Building Blocks, was erroneousll written and printed Charles H. Frostg that said name should have been Written am printed Charles W. Frost and that lthe said Letters Patent should be read with thi correction therein that the same may conform to the record of the ease in the Paten Oee. Y

Signed, eountersigned, and sealed this 28th day 0f September, A. D. 1886.


I Acting Secretary of the Interior Gountersigned:


Aottng Commissioner of Patents.

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3577671 *Feb 26, 1969May 4, 1971Woollett Roy PerryConstruction kits for toys and models
US3597875 *Nov 18, 1968Aug 10, 1971Interlego AgToy building set
US5137452 *Oct 29, 1990Aug 11, 1992Clyde PollockBase--ten blocks employing single, attachable blocks of one color row of ten blocks of different color
US5176577 *Oct 29, 1990Jan 5, 1993Clyde PollockRectangular blocks for teaching arithmetic have uniform size joinability and transparency
US5238407 *Oct 29, 1990Aug 24, 1993Clyde PollockBlocks with mating bosses and recesses which bulge for interference fit
US5238408 *Jul 9, 1990Aug 24, 1993Clyde PollockRow of joined arithmetic blocks with common walls which are double end wall thickness
US5647185 *May 14, 1996Jul 15, 1997Forlini; Emidio J.Structural blocks and assemblies thereof
US6571525Aug 1, 2001Jun 3, 2003J. David ColemanConstruction block
US8382548 *Dec 23, 2009Feb 26, 2013Mattel, Inc.Toy building blocks
US8961259 *Jan 15, 2013Feb 24, 2015Mattel, Inc.Toy building blocks
US9364767 *Apr 11, 2013Jun 14, 2016Olivia FoxToy building block
US20070145864 *Dec 23, 2005Jun 28, 2007Peter FreedmanModular furniture system
US20100210173 *Dec 23, 2009Aug 19, 2010Mattel, Inc.Toy building blocks
US20130143467 *Jan 15, 2013Jun 6, 2013Mattel, Inc.Toy building blocks
US20130330998 *Apr 11, 2013Dec 12, 2013Olivia FoxToy Building Block
Cooperative ClassificationA63H33/086