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Publication numberUS975792 A
Publication typeGrant
Publication dateNov 15, 1910
Filing dateFeb 16, 1910
Priority dateFeb 16, 1910
Publication numberUS 975792 A, US 975792A, US-A-975792, US975792 A, US975792A
InventorsReinhart W Pittman
Original AssigneeReinhart W Pittman
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
US 975792 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)


Patented Nov. 15, 1910.

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Specification of Letters Patent.

Patented Nov. 15, 1910.

Application filed February 16, 1910. Serial N 0. 544,236.

To all whom it may concern:

Be it known that I, REINHART V. PITT- MAN, of the borough of Manhattan, city and State of New York, have invented a certain new and useful Improvement in EX- pansion-Envelops, of which the following is a specification.

This invention has for an object to cheapen the cost of manufacture of articles of the above character by so shaping the blank or blanks from which the envelop is made that a minimum number thereof sufiices to complete the envelop. The creased blank or blanks for an envelop may be secured in the folded condition by stapling or gluing. By thus making the greatest number of envelop parts in one integral blank the number of separate blanking operations is reduced, the labor of assembling and attachment lessened, etc.

The present envelop embodies a single main blank forming in general when creased and folded the bellows plaiting or gussets, the two envelop sides, and an inner side facing or strengthening piece together with.

other envelop parts depending on the char acter of the envelop to be manufactured.

In the drawing accompanying the present specification Figure 1 is a perspective view of an expansion envelop embodying my present improvements, parts being broken away. Fig. 2 is a cross section thereof. Fig. 8 is a detail of a separate reinforce for one of the envelop sides. Fig. 4 is a plan of an envelop-forming blank, the creasing lines 011 which are dotted.

Similar characters of reference designate corresponding parts in all figures.

The present envelop is of the ordinary expansion type in that it is made with the desired number of the usual gussets or plaits. The illustrated envelop is provided with four such plaits marked 2.

The envelop-forming blank may be cut in the usual manner from appropriate stock. Such blank in this instance comprises a rectangular bottom and end-forming portion 2 creased along lines indicated in a general way by dotted lines to form when folded along these lines the bottom and end plaits 2 of the envelop.

In accordance with this invention, the one piece blank thus far described also includes portions 3 and 4, constituting the respective sides 3 and 4 of the envelop when folded. In the preferred form, also, the blank has the integral portions 8 and 9, the former when folded constituting a reinforce 8 for that side of the envelop. Portion 9 when folded forms the envelop flap 9, but when the envelop is fiapless this portion may constitute a reinforce similar to reinforce 8.

If the presence of corner strengtheners is desirable, these may be formed by portions 5, 5, 5, 5 of the blank, these being creased along respective diagonals indicated and forming when folded triangular braces or folds 5 indicated in Fig. 1.

I have indicated in Fig. 3 a separate inner reinforce 6 for that side of the envelop from which the flap extends.

The parts of the folded envelop may be held together as an integral whole by various means. For instance staples 6 may be used as indicated in Fig. 1, or the parts may be glued together in the usual manner. The usual binding tape is designated by 7. It is thus seen that the present envelop is made from a single-piece blank or at the most two pieces, and that it is strengthened at all essential points and in a manner such that the mere stapling of the parts together completes the finished article.

Having described my invention, I claim:

An expansion envelop embodying a flap, bottom and end plaits, envelop sides, triangular corner folds and an inner reinforce folded down over two contiguous corner folds, all integral with the material of the plaits, combined with a second reinforce separate from the flap and folded down over the remaining two corner folds, and means for securing the parts together.

In witness whereof I have signed this specification in the presence of two subscribing witnesses.




Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2460909 *Mar 8, 1946Feb 8, 1949Shaffer Morton JBellows type envelope having all edges of mouth reinforced
US4274577 *May 16, 1979Jun 23, 1981Walsh Jr Charles BExpansion filing container
US5362299 *Apr 15, 1991Nov 8, 1994Schou Diane DStamp storage envelope and method of making same
US5495727 *Apr 22, 1994Mar 5, 1996Strong; BryanContainer and expandable cooler
US5664724 *Feb 8, 1996Sep 9, 1997Honn Hsin Enterprise Co., Ltd. (Taiwan Corporation)Compartmentized file folder apparatus
US5711750 *Jun 7, 1995Jan 27, 1998Smead Manufacturing CompanyReinforced expandable folders
US5720427 *Jun 28, 1996Feb 24, 1998The Smead Manufacturing CompanyReinforced expandable folders
US6394336Mar 1, 2000May 28, 2002Motion Design, Inc.Adjustable container and a method for forming an adjustable container
US6607122Mar 15, 2002Aug 19, 2003Bon S. OngCombined detachable filing wallet devices
US6631803Mar 21, 2001Oct 14, 2003Coors Brewing CompanyBeverage cooler box
US6669080Mar 15, 2002Dec 30, 2003Bon S. OngCombined file pocket and expanding file
US6905064Aug 5, 2002Jun 14, 2005Bon S. OngExpanding file with pocket divider
US6945450Aug 27, 2002Sep 20, 2005Coors Global Properties, Inc.Beverage cooler carton
US7237710Oct 7, 2004Jul 3, 2007Ong Bon SExpanding file with multisize pocket dividers
US20040040334 *Aug 27, 2002Mar 4, 2004Rusnock Kevin R.Beverage cooler carton
US20080078818 *Sep 12, 2007Apr 3, 2008Amy BotkinExpandable file box
US20080237077 *Jul 23, 2007Oct 2, 2008Eric SagePortfolio carrier construction
WO1999028137A1 *Dec 3, 1998Jun 10, 1999Rew David RDocument folder
WO2000032414A1 *Jun 30, 1999Jun 8, 2000Rew David RDocument folder
Cooperative ClassificationY10S229/928, B42F7/08