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Publication numberUS1098894 A
Publication typeGrant
Publication dateJun 2, 1914
Filing dateSep 12, 1913
Priority dateSep 12, 1913
Publication numberUS 1098894 A, US 1098894A, US-A-1098894, US1098894 A, US1098894A
InventorsPaul Dobler
Original AssigneeHerr Ludwig Boehm
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Device for automatically holding doors, windows, &c.
US 1098894 A
Abstract  available in
Previous page
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Claims  available in
Description  (OCR text may contain errors)


Patented June 2, 1914 3 SHEETS-SHEET 1.

j v v 2 [.113 a (PT-INT Aft) 'f g 6' l [29.2 v v( m WWW; dwiW/y 1 ml Dalia! P DOBLER. DEVICE FOR AUTOMATICALLY HOLDING DOORS, WINDOWS, dw.


Patented June 2, 1914.




Patented June 2, 1914.


s aginur OFFICE.



imvren FOR AUTOMATICALLY n'otnme DOORS, wmnows, 6w.

To all whom it may concern Be it known that I, PAUL DOBLER, a subject of the German Emperor, residing at Munich, in Germany, have invented certain new and useful Improvements in Devices for Automatically Holding Doors, Windows, &c, of which the following is a specification. lhe iiwention relates to improvements in devices for autolmitically holding members for closing openings, such as sliding windows, doors and the like, in their end positions or any desired intermediate position. In such devices it is known to provide the edges of the movable member and a corresponding guide part of the opening, with brush-like strips, so that the friction of these strips engaging each other longitudinally provides a braking action which holds the movable member in the desired position.

In the accompanying drawings, Figures 1 and 2 illustrate the known application of frictional coacting brushes to a sliding window and door respectively. Figs. 3 to 10 illustrate the improvements of the present invention in which Fig. 3 is a diagram illustrating the principle of the invention. Fig. 4 is anelevation illustrating the bristles of thenrembers out of engagement with the bristles of the other. Fig. 5 is a similar view showing the same in engagement. Fig. 6 is a side elevation of Fig. i and illustrates means for adjusting the depth of engagement of the bristles. Fig. 7 is a section on line AB of Fig. 6. Figs. 8 to 10 illustrate the invention applied to a swing door, Fig. 8 being a cross section through the door post, Fig. 9 a section on line 0-D of Fig. 8 and Fig. 10 a diagram.

Referring to Figs. 1 and 2, Fig. 1 shows a sliding window,'as used in railway carriages, tramway cars and the like, provided with the known fastening arrangement. F ixed to the vertical edges of the window frame 2 are brushes 3, which extend the whole length of the window and face brushes 5 secured to the guide-bars 4:- These brushes, which may lie. made of steel wire, horse hair or any other lengths, can be secured with their backs to the window. frame and to t window guides by means of screws or the li The bristles of the facing brushes engage into each other to such a depth that the respltant friction balances the weight of the window, so that he att r is eld. so el y r cti n its Specification of Letters Patent.

Application filed September 12, 1913.

suitable material, and may be of various Patented June 2, 1914.

Serial No. 789,425.

closed or any desired intermediate position. When applied to sliding doors, the brush covers also serve to hold the door in any des red position in addition to its closed posi- U911. Fig. 2 shows by way of example the sl ding door of a railway carriage provided with this arrangement. As shown, the door 9 is provided along its upper edge with a brush 3 which faces a brush, or a short piece 5 of a brush as shown on the top of the door frame 10. When the door is closed the brushes engaging with each other hold the door in this position without the aid of a catch.

The object of the present invention is to provnle an improved form of one of the the form of strips, the bristle tufts of one of the brush strips are preferably fixed to rotatable pins arranged transversely to the direction of movement of the window, so that when the movable member is moved in one direction (to close the window) its bristles are turned out of engagement with the bristles of the other brush strip and lie at an acute angle to this direction of movement, but are turned into engagement again when the movable member is moved in the opposite direction (opening the window), whereby at first only the tips of the bristles engage and then gradually assume their fully engaged position. This action is shown diagrammatically in Fig. 3. The tufts of bristles a; of the brush strip 5 are fixed t0 rotatable pins b mounted transversely to the direction of movement of the brush strip 3, the bristles a being inclined so that their lower points rest against the bristles 0 of the brush strip 3. If the brush strip 3 is moved tufts a, the pins bare provided with projec- When the brush I engagement, in

tions adopted a stop 6.

n the op rring to F k l, application 0t 5 the invention the pins c with the tutts bristles a are rotatabl-y mounted between. plates gsnd h 7 )Jhcld a certain distance apart by pins f. The one end of eac pin 3) is half cut away so that s semi-circular projection 7' projecting beyond the plate 3') is formed. Arranged around the supports 9, h, f for the pinsb carrying the tufts o an angle piece 70, against the upper flange of which the flat surface of the projections i abut when the brushes a are in the position shown in Fig. i, that is to say, when the window carrying the brush strips 3 is pushed up. The one member of the angle plate is serves for securing the brush'strip 5 to the guide-bar e for the "window; and said flange is also provided with inwardly projecting pins to, which pro ject through the pins j and thus provide ide for lateral movement of the su port- 'mg member g, h, f. This lateral movement occurs When in moving the Window down Ward the bristles of the brush strip 3 engage the tips of the bristle tufts a, thereby causing the pins 5 to rotate, During; this rotation of the pins Z) the lower edges of the projections 11 abut against the lono'itndinnl dge of the horizontal. linings of the ongl ece Jc id thus push the Whole support the brush pins to the right the xtent. i I oi: rnent being shown by the di 5. wherein the bristl engage as indicated in Fig. The Whole depth 01' this case is thus ccy. In order to limit the distance 2 s strip-shaped stop n is provided on a plate 0 (Fi n Y), said stop limiting the rotation of the projections and consequently the displacement of' the carrier for the brush pins 5. In order to be able to regulate the distance- 3/ the plate 0 is sidji'lstably mounted as shown st .33 6, For this purpose the flange 7. of the plate is provided With two bolts 32 which project through iisrcllel slots gin the plate 0, The iicng'e of the engrepiece Z: is also provided with n pin. r inwhich screwed a stud s, the latter abutting both ends against the horizontal edges of a recess 5' in the plate 0. The plate 0 is caused to rise or descend by c rrespondingly turning the stud 5 said plate being"simultaneously lnOY-Ld later-ally by the snide pins 72 and slots Nutsu serve to lock the plate in its adj! ted position.

and if) "how the orrsn rot-stable brush pins applic ent of the i ng door oorpose of broking the door as it w i and fro, to avoid slsnnning which is inseparable with door provided with locks, to prevent shaking of vehicle doors.

isacross section through the door post and door 84, the braking device 35 beingshown in plan, and Fig. 9' is section on the line C--D of Fig. 8.. The parts g, h, F, n correspond in these figures with the parts g, 72-, f, n of Figs. l7. f is a Web connecting the plates 9 72, and by which the device is connected. to the door-post Two separaterows of brush-pins are provided in this case, one on either side of the center line of the door-posh and the pins With the bristles thereon are arranged to turn at an angle toward the door as clearly showzl in the drawing, a. space remaining between the two sets for the brush strip on the edge of the swing door When the door is opened in the direction indicated by the arrow (Fig. 8), the brushes on the left-hand side are turned back so that they point straight out and the door can be opened by overcoming the resist- 1 ,red thereby. When the door swings.

hes are forced back into the as shown, and the door ng the resistance ofieredby the crushes a on the right is forced-back to its closed position The 1110 ement of the tufts 0t bristles a is limited by the edges of the projections z abutting against the plate n :0- designates the depth of engagement of the brushes o and 0.

What 3: claim as my invention and desire to secure by Letters Patent of the United States is mg the movement of a table member with respect to afined iber o prising in combination series of nxcd fricnon members attached to one of n'lernbers and series of pivoted fricrnonnced on the other of said inc W, 1 ads d to turnviiito orout of engagement with said fixed friction; members by the movement of said movable member.

2. Means for braking the movement of a movable member with respect to s fixed member comprising in combination a brush member attached to one of said members and series of. pivoted bristle tufts mounted on the other of niernbers and adapted to turn into or out of engagement with said brush member by the movement of seidmovable member.

3. Mesns'for braking the movement of a movable member with respect to a. fixed.

mes esoristles'of said brush member by the movementmf said movable member, means for limiting the rotary movement of said pins allowing lateral movement of said tufts to- Ward said hrushmember and means for ecljusting the depth of engagement between said bristle tufts arid the bristles of said brush member.

4. Means for braking the movement 'of a movable member with respect to a fixed member comprising a brush strip attached to one of said members, a plate attached to tlie other of said members, a flange thereon, a pair of longitudinal supports spaced apart, rotatable pins mounted between said supports, bristle tufts mounted on said pins adapted to engage with said brush strip, means carried by said pins and eoacting with said flange for causing lateral movement of said supports and the tufts carried thereby with respect to said plate, a stop for limiting said lateral movement, and means for adjusting the position of sziicl stop.

In Witness whereof I have signed this. specification in the presence of two Witnesses. I v

' Pill L DOBLER. Wi tnesses:

rlOSlCilh ll user, .holuim Emir.

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2568477 *Jan 31, 1949Sep 18, 1951Westlund Jesse VDoor check
US4208755 *Feb 5, 1979Jun 24, 1980Shepherd L ClayTrack wiper for sliding shower door assembly
U.S. Classification49/431
Cooperative ClassificationE06B7/232