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Publication numberUS1479628 A
Publication typeGrant
Publication dateJan 1, 1924
Filing dateMay 12, 1922
Priority dateMay 12, 1922
Publication numberUS 1479628 A, US 1479628A, US-A-1479628, US1479628 A, US1479628A
InventorsLudwig Seger
Original AssigneeLudwig Seger
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Hinge lock
US 1479628 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)

J.. l, 1924 1,479,628 l.. sr-:GER

HINGE LOCK Filed May 12 1922 2 Sheets-Sheet 2 Patented Jan. l, 1924i.



Application filed May 12, 1922. zSerial No. 560,340. A'

To all whom t may concern:

Be it known that I, LUDWIG SEGER, a citizen of the Republic of Switzerland, residing at Edgewater, county of Bergen, and State of New Jersey, have invented certain new and useful Improvements in Hinge Locks, of which the following is a specification.

This invention relates to improvements in hinges and hinge locks, particularly of the character described in my co-pending application, Serial No. 472,841, led 'May 26, 1921, intended for use with step ladders or the like, when these ladders are 'to be ernployed as straight wallladders with their uprights locked in alignment.

It is the principal object of the invention to provide a hinge or hinges for this purpose connected with suitable sleeves or socket members adapted to be secured to the upper ends of the side bars of the ladder.

Another obj ect of the invention is the provision of a suitable fastening means for locking the hasps of the hinge members to the ladder uprights when the ladder sections are in their extended position, in order toenable the use of the extended ladder from either side and positively avoiding the danger of accidental separation of the ladder parts under the weight of a person by the oscillation of the hinge hasps. Y

With these objects in view, the invention consists of certain novel features of con# struction, combinationv and arrangement of parts, as will be hereinafter more fully de` scribed and claimed.

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

Figure 1 is a perspective view of a step ladder equipped with a hinge device con-Y structed according toY the present inven,


Figure 2 shows the device in Figure 1 set up as a straight wall ladder.

Figure 3 shows a hinge constructed according to the present invention in top plan, sideend and bottom plan views.

Figure 4 is an enlarged detail perspective view of a hinge constructed according to the present invention provided with a hasp lock.

Figure 5 is a fragmentary detail view of a modified form of hasp lock.

Figure 6 shows in top, side'and bottom plan views a modified form of hinge construction.

Figure 7 illustrates" one form ofv hinge construction, Figure 6,'andV V Figure 8 illustrates another form ofsaid hinge construction.

Referring to the drawings, 10 represents the side bars, and11the steps orrungsgof the lower section, and 12 the side sbars, and 13 the steps or rungs ofthe upper section of a step or wall ladder..

Securedin any suitable well known manner to the upper end ofeach side bar 10 and 12 is a Vmetallic sleeve, cap or socket 14 of a j construction illustrated in detail in Figure- 4. Each pair of sockets 14'to be attached to the ends of the side bars of ai ladder at their- Y meeting points .on one side of the vladder comprises a body part made extremely light by providing open spacesl in itsside, bottom and en d walls.. 4

At its inner bottom end edge, one sleeves 14 carries spacedears 16l through the inner bottom end edge of the adjoining sleeve 14 which engagesl in the spacel between sleeve 14. The inner upper end edge of the y.

adjoining part 14 carries a central projectionv22 through which a pintle 23 is passed which is also passedA through: perforated of the Y lwhich a pintle 17 isL passed, which isalso passed through an earV 18'in thecenter of ears 24 and 25 at the .inner endof .a hasp Y member 26, one ear on each side of the ,pro-.

on the outerjface of member 26 near and ad; joining to ears 24 and -25 are adaptedto en-jV gage in thespaces 28 behind noses 2O when the hasp is in its-locking position.- Each of the sleeves 14 is provided with a lower .inner shoulder 29 supporting the upper step 1l of the step ladder.

A snap lock 30 of the form illustrated in Figure 4 is secured upon the top of one of the sleeves 14 and when the hasp 26 is swung into its locking position its curved side ianges 31 and 32 will allow a passage of the member 26 and hold the same in said clasp against accidental displacement.

The outer end of the other sleeve 14 is provided on its vinner face with a recess 33 into which the ends of the upper rung 13 jection l22, while lateral shoulders 2 7,formed i Y fits. ure 5 is provided with a longitudinal slot 34, through which-a rotatable lockingmem-` ber 35 projects which is secured lat its lower end on the top of sleeve 14.

When the device isto be. used as a step ladder, a connecting bar 36 is provided which is pivoted at one end to the inner face.

In the'modified form of hinge illustratedY in Figures 6, 7 and 8, the hinge members or sleeves 39, 40 are either formed as shown.

in Figure 7 or as shown in Figure 8.

In the form illustrated in Figure 7, the

sleeves 39 and 40 are formed by metal bands having one end 41 overlapping the `other end 42 at the sides, while theinner end edgesV of thek sleeves thus formed are bevelled' as at 43 and 44.

In the forni villustrated in Figure 8, the

sleeves 39 and 40 are formed open on three sides with upper flanges 45 and lower flanges 46 overlapping the side edges of thek side' bars of the ladder. The endsof theside plates are connected at one end by a-plate 47 and the upper `and lower edges are bevell led-as at 48 and 49 respectively. The hasp member 26 and the hinge members are otherwise connected in a maiiiiersimilar to that described with respect to hinge members 14;

Having thus described my invention what ll claim as new-'and desire to protect by LettcrsfPatent of the United States is- 1. n a sectional combination step and eX- tensioii ladder, hinged members, adapted to engage the meetingV ends of the side bars of said ladder, and to be secured thereto,

shoulders formed at one end of'one of said members for supporting'the uppermost stepl of the step i ladder, hinge locks combinedv with said members for locking the side `bars of said ladder sections in their adjusted positions as an extension ladder, clamps for holding said hinge locks in their'locking' position, a hooked-bar pivotally secured to one of The hasp member 26, as shown in Figy the side bars of I one of the step ladder ner/ases sections and to engage a pin on the other section, and a platform adapted to be attached to the rungs Vof one section and to rest on top of the uppermost step of the 'other section.

2. In a sectionalcombination step and eX- teiision ladder, hinged sleeve members, each provided with a plurality of openings and a recess on one side of one of the members at its lower'endjfor engagement by a ladder rung, said sleeves adapted to engage the meeting ends of the side bars of said ladder, means for securing said sleeve members on said sections, shoulders formed at onel end of one of said members for supporting the uppermost step'of the step ladder, a hinge lock includinga hasp combined with said.

sleeve members for locking the side bars of said ladder sections in their adjusted posi- .tion as an extension ladder, a spring clampV having upstaiidiiig flanges for engaging and holdin" said hinge lock in its locking osib C b tion, a means for connecting the step ladder sections, and a platformzfor providing a firm support at the top steps of the step` ladder.

3. ln a sectional combination step .and eX- tension ladder, Vrungs connecting the side bars of oneof said sections, and steps connecting the sidebarsof the other section, sleeve members each having a plurality of openings adapted to be secured to the meeting ends of the side bars of said ladder sec-A tions and having bevelled upper and lower inner edges, hinges connecting the lower parts of said members, a hinge lock at the upper parts of said members includinga hasp pivotally secured to one member -andA engaging the other'member, spring rclamps for locking said'has'pin its locking position in engagement with the second member when the sections of said ladder are in their adjust'ed position as an extension ladder, means for connecting two of the sidel bars of said ladder 'in its position for-use as a step lad` der, and a platform adapted to be huiigfrom the rungs of one ladder 'section' and to engage the uppermost step of the other ladder section to present an enlarged foot support.

In testimony whereof l have aiixed my signature.


Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2597639 *Mar 9, 1950May 20, 1952William H HurlinCombination hinge and latch for playpens
US2608337 *Feb 9, 1948Aug 26, 1952Nehler Oscar ELadder hinge
US2662681 *Jul 31, 1948Dec 15, 1953Stapleton Bruce EFoldable ladder and hinge members therefor
US2814051 *Jun 17, 1954Nov 26, 1957Ruoff GerhardFolding play pens
US3012627 *May 4, 1959Dec 12, 1961Mitchell Daniel LSupport structure
US3307652 *Jul 16, 1965Mar 7, 1967Green John CFolding step ladder
US3512816 *Mar 18, 1968May 19, 1970Katano Jitensha KkMeans for connecting front and rear portions of a foldable bicycle
US3779343 *Jul 26, 1972Dec 18, 1973Littlejohn CUnits for connecting together successive ladder sections
US4298093 *Nov 16, 1978Nov 3, 1981Little Giant Industries, Inc.Sawhorse
US4719990 *Aug 27, 1986Jan 19, 1988Branko MarkovicStep ladder for stairs
US6354758 *Feb 3, 2000Mar 12, 2002David M. ChaulkConnector assembly for connecting walk boards
US8011530 *Mar 7, 2007Sep 6, 2011Seb S.A.Articulating handle for space-saving cookware and method for using same
US20110192437 *Apr 14, 2011Aug 11, 2011Paul AdamsProtective shelter
U.S. Classification182/24, 182/120, 182/116, 16/347, 403/102
International ClassificationE06C1/32, E06C1/00
Cooperative ClassificationE06C1/32
European ClassificationE06C1/32