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.


  1. Advanced Patent Search
Publication numberUS1480147 A
Publication typeGrant
Publication dateJan 8, 1924
Filing dateJun 28, 1920
Priority dateJun 28, 1920
Publication numberUS 1480147 A, US 1480147A, US-A-1480147, US1480147 A, US1480147A
InventorsBrandt Fokko
Original AssigneeBrandt & Krell Engineering Com
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Stringer clamp
US 1480147 A
Abstract  available in
Previous page
Next page
Claims  available in
Description  (OCR text may contain errors)

Jan. 8 1924.

F. BRANDT STRINGER CLAMP Filed June 28 Patented Jan. 8, 1924.

UNITED star.

v y mar? AT T F1 on.



Application filed June 28, 1920. Serial No. 392,384.

To all whom it may ooncem:

Be it known that I, FoKKo BRANDT a citizen of the Republic of Germany, and resident of Kansas City, in the county of Wyandotte and State of Kansas, have invented a certain new and useful Improvement in Stringer Clamps, of which the following is a complete specification.

The present invention relates to scaffolding or other supporting constructions of an analogous character, and aims to provide an improved means of attachment for enabling the stringer members to be secured to the framework of such constructions in supported relation.

, Accordingly, I have devised an improved type of bracketv structure whereby the various brackets may be attached to the upright members of the framework at any desired elevation, in position to receive the stringer members'and allowing the latter to be assembled by a single workman in the most convenient manner possible, means being also provided for'appropriate engagement with the upper edges of these strlngers and retaining the same securely within the several brackets supporting any one of said members.

More specifically, the improved stringer supporting structure comprises a bracket adjustably-mounted as described, and pro vided with anchoring means comprisinga rod mounted for'both vertical and angular adjustment within the bracket, the upper end of said rod being formed with an arm movable into and out of overhanging relation to the stringer member and formed with a spur adapted to be embedded in the upper edge of the stringer.

With this general object in view, the invention will now be described by reference to the accompanying drawing showing one form of construction which I have devised for embodying the improvement, after which the novel features therein will be specifically set forth and claimed.

In the drawing:

Figure 1 is a fragmentary side elevation illustrating a portion of a scaffolding structure, and showing a stringer member supported by bracket elements constructed in accordance with the present invention;

Figures 2 and 3 are enlarged detail views each illustrating a fragmentary portion of one of the upright members and Figure 2 showing a side view of'the bracket memher, while Figure 3 shows a face view of the same; and

Figure 4c is a transverse section taken on the line 4-4 of Figure 2.

Referring now to the drawing in detail, this illustrates the improved construction in connection with a portion of a scaffolding comprising a plurality of upright members .5, to which are attached at intervalsa series of stringer members 6 (only one of which is shown), the upright members 5 being provided with suitable bracket elements for securing thesaid strin er members in proper supported relation. %n the present case, these supporting elements comprise bracket members .7 of angular form for providing a supporting ledge 8 engaging'the under edge ofthe stringer 6, while the upright portion 9 of the bracket is adapted to engage the outer side face of said stringer, as illustrated in Figure 2., The lower or horizontal portion-8 of the bracket is formed with an arcuate recess 10 of a'size adapted to conform to the upright 5 to whichthe bracket is attached, and for securing each bracket tothe corresponding upright, a U bolt 12 is provided which is adapted also to embrace the upright-from the opposite side, the ends of the U bolt beingv passed through the'perforated ears 14 formed on the lower end of each bracket, and firmly secured by means of nuts-15, whereby thebracket' 7 is held rigidly in any position to which it may be adjusted vertically along the upright 5.

Means is provided for allowing the stringer 6 to be let down freely within the bracket and thereafter securely holding the same within the bracket by engagement with the upper edge of the stringer. This means takes the form of an anchoring rod, the shank portion 16 of which is mounted for vertical adjusting movement within a hollow or tubular rib or sleeve 17 formed on the outer face of the upright portion 9 of each sleeve 7 the upper end of this anchoring rod being bent substantially at right angles to form an arm 18 terminating in a spur 19 which is adapted to be embedded into the upper edge of the stringer 6. -With this arrangement, it is apparent that the arm 18 may be swung into or out of overhanging relation to the stringer 6, as illustrated in Figure 2, by virtue of the move:

of its shank portion within the sleeve 17 while the arm may of course ;be elevated to different heightson account of the sliding movement permitted the rod 16 within said sleeve. A clamping. screw 20 threaded through a lateral opening 21 into the sleeve 17 is utilized for securely retaining the anchoring rod in any of its positions by clamping engagement with the shank portion 16 thereof.

It is thus apparent that a bracket structure is provided for knock-down scafiolding purposes which not only permits of the assembling of the stringer 6 at any desired elevation, but permits the stringer to be mounted conveniently "by the work of one man, who is enabled to mount these stringers in position as a whole or bodily within several brackets, or the stringers can be put in place by engaging the same with one of the brackets and thereafter swinging the stringer into position within the remainder of the brackets in an obvious manner and without danger of the stringer becomingdis engaged and possibly falling to the ground on account of the workman losinghis hold on the stringer. The provisionofthe anchoring rod with its arm 18 which is shiftable either intoor out of oVerhangingrelation with reference to the top of the stringer, permits of these described assembling operations of the stringer and at the same time provides ameans for retaining engagement through the medium of the spur 19'adapted to be embedded in the top edge of the stringer and thereby securely hold the same within the bracket. lhe vertical adjustment of said anchoring rod by sliding the same within the sleeve '17 accommodates for various diflerent widths of stringers in addition to the slight vertical movement necessary for allowing the spur. 19 to be embedded in the stringer, which is accomplished by one or two blows with a hammer or the like before the clamping screw 20 is tightened.

An extremely simple, compact and yet efficient construction is thus provided for carrying out the desired objects of the inmay fairly fall within the scope of the fol lowing claims:

What I claim is:

1. The combination with an upright, of a stringer, an angularbracket carried by said upright and supporting said stringer, and a vertically adjustable anchoring rod carried by said bracket and formed with an arm adapted to becla'mped down upon the upper edge ofsaid stringer.

2. The combination'with an upright, of a stringer, an angular bracketcarried by said upright and supporting said stringer, and a vertically and angularly adjustable anchoring' rod carried by said bracket and formed with an arm movable into and 'out of overhanging relation to saidstringer, said arm beingadapted to be clamped'down upon the upper edge or said stringer.

Bllhe combination with anupright, of a stringer, a bracket carried by said upright and supporting saidstringer, and an anchoring rod having a vertical shank portion adjustable vertically with reference to said bracket, said rod being. formed with an arm adapted to be clamped down upon the upper edge of said stringer, said arm being movable angularly with said rod about the axis" of said shank portion for bringing said arm out of overhanging relation to the stringer, and a clamping screw for securing the rod in various adjusted positions.

In witness whereof 1 hereto afiix my signature.


Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US4003209 *Jul 31, 1972Jan 18, 1977Jackson Gary APier construction
US4505011 *Feb 16, 1983Mar 19, 1985Letourneau CompanySafety belt anchor
US6799607Jun 18, 2003Oct 5, 2004Pbm, Inc.Sanitary conduit support systems and methods
US7195038Sep 1, 2004Mar 27, 2007Pbm, Inc.Conduit supports
US7367363Dec 19, 2005May 6, 2008Pbm, Inc.Sanitary conduit support systems
US7481247Dec 19, 2005Jan 27, 2009Stauff CorporationSanitary conduit supports
US7506643Jun 30, 2006Mar 24, 2009Larry HolmbergCrossbow device mount
US7543606Dec 19, 2005Jun 9, 2009Stauff CorporationMethods for supporting conduits in a sanitary environment
US7574824Jan 6, 2006Aug 18, 2009Larry HolmbergDevice mount for a firearm
US7594352Oct 17, 2006Sep 29, 2009Larry HolmbergDevice mount with stabilizing function
US7619676Mar 18, 2004Nov 17, 2009Larry HolmbergCamera lens and display
US7643132Apr 15, 2005Jan 5, 2010Larry HolmbergRange finder
US7647922 *Jun 30, 2006Jan 19, 2010Larry HolmbergAdaptor for device mount
US7739822Jan 8, 2008Jun 22, 2010Larry HolmbergMethod and device for mounting an accessory to a firearm
US7780363Jan 17, 2008Aug 24, 2010Larry HolmbergDevice for mounting imaging equipment to a bow and method of recording a hunt
US7880793May 29, 2009Feb 1, 2011Larry HolmbergCamera with mounting rail
US7891131Jan 5, 2007Feb 22, 2011Larry HolmbergDevice mount system for a weapon
US7926220Aug 19, 2009Apr 19, 2011Larry HolmbergStabilizing device mount and method
US7965337May 29, 2009Jun 21, 2011Larry HolmbergSystem for mounting camera on bow
US7982858Nov 20, 2009Jul 19, 2011Larry HolmbergRange finder
US8024884Jun 16, 2009Sep 27, 2011Larry HolmbergElectronic device mount system for weapons
US8035735May 29, 2009Oct 11, 2011Larry HolmbergCamera with weather cover
US8045038Oct 1, 2009Oct 25, 2011Larry HolmbergVideo camera with mount
US8046950Jul 7, 2009Nov 1, 2011Larry HolmbergMethod of attaching device to weapon
US8059196Dec 3, 2009Nov 15, 2011Larry HolmbergCamera for mounting
US8156680May 29, 2009Apr 17, 2012Larry HolmbergDevice mounting system for a weapon
US8161674Jun 16, 2009Apr 24, 2012Larry HolmbergElectronic device mount system with strap
US8240077May 29, 2009Aug 14, 2012Larry HolmbergRange finder for weapons
US8656624Dec 29, 2010Feb 25, 2014Larry HolmbergUniversal device mount
US8656625Oct 4, 2011Feb 25, 2014Larry HolmbergAccessory mount
US8656629Jul 23, 2012Feb 25, 2014Larry HolmbergRange finder for weapons
US8717496Aug 22, 2011May 6, 2014Larry HolmbergRail mount
US8717497Oct 12, 2011May 6, 2014Larry HolmbergCamera for mounting
US9143663Apr 7, 2014Sep 22, 2015Larry HolmbergCamera for mounting
US9521300Aug 13, 2015Dec 13, 2016Larry HolmbergCamera for mounting
US20040183942 *Mar 18, 2004Sep 23, 2004Larry HolmbergCamera lens and display
US20050022891 *Sep 1, 2004Feb 3, 2005Friedline Gary W.Sanitary conduit support systems and methods
US20050195385 *Apr 15, 2005Sep 8, 2005Larry HolmbergRange finder
US20070157502 *Jan 6, 2006Jul 12, 2007Larry HolmbergDevice mount for a firearm
US20080000463 *Jun 30, 2006Jan 3, 2008Larry HolmbergCrossbow device mount
US20080000465 *Jun 30, 2006Jan 3, 2008Larry HolmbergAdaptor for device mount
US20080001057 *Jun 30, 2006Jan 3, 2008Larry HolmbergDevice mount
US20080087784 *Oct 17, 2006Apr 17, 2008Larry HolmbergDevice mount with stabilizing function
US20080164392 *Jan 5, 2007Jul 10, 2008Larry HolmbergDevice mount system for a weapon
US20090183353 *Mar 23, 2009Jul 23, 2009Larry HolmbergMethod of mounting an autonomous electronic device on to a crossbow
US20090237556 *May 29, 2009Sep 24, 2009Larry HolmbergCamera with weather cover
US20090244326 *May 29, 2009Oct 1, 2009Larry HolmbergCamera with mounting rail
US20090244362 *May 29, 2009Oct 1, 2009Larry HolmbergSystem for mounting camera on bow
US20090255162 *May 29, 2009Oct 15, 2009Larry HolmbergRange finder for weapons
US20100018103 *Jul 7, 2009Jan 28, 2010Larry HolmbergMethod of attaching device to weapon
US20100066899 *Oct 1, 2009Mar 18, 2010Larry HolmbergVideo camera with mount
US20100071247 *Nov 20, 2009Mar 25, 2010Larry HolmbergRange finder
US20100128166 *Dec 3, 2009May 27, 2010Larry HolmbergCamera for mounting
US20100313462 *Jun 16, 2009Dec 16, 2010Lary HolmbergElectronic device mount system for weapons
US20110113672 *Nov 19, 2009May 19, 2011Larry HolmbergRemote controlled decoy
USD499957May 11, 2004Dec 21, 2004Pbm, Inc.Conduit support
CN103132496A *Feb 22, 2013Jun 5, 2013中交二航局第三工程有限公司Clamping pile constructed in concrete structure on upper portion of high pile dock pipe pile
CN103132496B *Feb 22, 2013Apr 1, 2015中交二航局第三工程有限公司Clamping pile constructed in concrete structure on upper portion of high pile dock pipe pile
DE1231874B *Oct 12, 1957Jan 5, 1967Fix Betonbau Schalung RuestGeruestklammer
U.S. Classification403/398, 248/231.41, 248/71, 411/446, 411/920
International ClassificationE04G7/02
Cooperative ClassificationY10S411/92, E04G7/02
European ClassificationE04G7/02