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Publication numberUS1422868 A
Publication typeGrant
Publication dateJul 18, 1922
Filing dateDec 3, 1921
Publication numberUS 1422868 A, US 1422868A, US-A-1422868, US1422868 A, US1422868A
InventorsEbedebick C. Kasgh
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
US 1422868 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)




Patnted July 18, 1922.

INVENTORS. Frederick C. KQSCh BY George F. Neff A TTORNE Y.


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Specification 01 Letters Patent.

Patented July 18, 1922.

Application filed December 3, 1921. Serial No. 519,608.

T0 at whom may come m:

Be it known that we, F REDERIOK U. KAsoH and Gnonon F. Nnrr, citizens of the United btates, and residents of Akron, county of Summit, and State of Ohio, have invented certain new and useful Improvements in Mountings for Draft Regulators, of which the following is a specification.

This invention relates to dampers or draft regulators and is directed to a new and improved method ofmounting the draft regulator in the walls of a building so as to be simple and easy to install and to present a neat appearance.

lVhile not limited to such use, it is particularly adaptable .for use in schools, halls or other public buildings being so designed as to be easy of access and at the same time to fit against the wall of the room snugly and to be so constructed as to prevent tampering by the school children or unauthorized persons. The regulator housing mechanismis especially constructed so as to be capable of being adjustably mounted so as to bring the cover plate flush with the wall.

These and other objects will be apparent from the description and drawing which is intended to disclose one embodiment of the invention. which is capable of realization in other forms and modifications.

In the drawing Fig. 1 represents a cross section through a wall and flue with our improvement in place.

Fig, 2 is .a cross section through the wall showing the mounting.

Fig. 3 is a vertical section through the wall showing a portion ofthe mounting in enlarged form.

Fig. i is a cross section on the line 1& of Fig. 2. the outer cover plate being removed.

Fig. 5 is a front view of the cover plate.

Fig. 6 is view of the indicatingdial.

Fig. 7 is a view of a tool which is especially adaptable for use with the damper.

In the drawing 1 represents the wall of a building or room in which is located the fine 2. which may be a heating or ventilating flue which leads to the room 3 by a register 4.

In the flue 2 is located a damper, here shown as an ordinary butterfly damper 5, the axis of which is indicated by the numeral 6. located in trunnions 7 on the walls of the flue. 8 indicates a housing in the form of a tube or sleeve which is set in the wall of the building, being of such length as to extend from the flue to a point near the outer surface of the wall 1. While the approximate thickness of the wall may be known before the equipment is furnished, variations will occur and it is impossible tOTUlIllSh the tube 8 in the exact length required in all cases. For this reason we mount on the end of the tube 8 a supplementarytube or collar 9. which telescopes over the endoff the tube and is secured in proper position of adjustmentby bolts 10 and nuts 11, the bolts being mounted in the end of thetube 8 and being received in slots 12 in the collar. By this device the bricklayer or carpenter in building the wall is enabled to accurately position the extension 9 of the tube so that it will he flush with the surface of the brick wall or studding which is indieated by the numeral 30. p a

Located within the tubular extension 9 is an indicating plate 13 which receives the forward end of the shaft 6 of the damper and. is provided with suitable notations to indicate the oosition of the damper. The forward end of the shaft is formed with a squared extension 14 to which is attached a pointer 15 one end of which is provided with suitable clamping means 16 coo erating with an arcuate slot17 in the plate 13 by which the damper issecure d in position.

The end of the extension 9 is so adjusted numeral 18 and the part 9 is constructed so as to receive a suitable cover plate which will be arranged to come to position against the face. of the plaster irrespective of the thickness thereof. On the inner surface of the extension are located two or more inwardly projecting pins or studs 19 and in the end of the collar is received the circular flange 20 of the cover plate 21. In the flange 20 are provided a number of spiral grooves or slots 22, equal to the number of pins and adapted to be received over the pins. The construction of the spiral grooves permits the cover plate to be turned. so that it will be securely held in the end of the tubular extension and will. bear against the outer surface of the wall. notwithstanding variations in the distance between the surface of the wall and the outer surface of the plate The cover plate is provided with a glazed window or sight 23, by which the adjustment of the damper may be observed and with any suitable means by which it can be turned, as by holes 24 in the outer periphery of the cover plate.

A suitable tool. for use by the janitor or care taker is shown in Fig. 7 in which 25 indicates the tool having a wrench head 26 for engagement with the end of the shaft 6 and a pair of pins 27 for engagement with theholes in the cover plate.

It will, be seen that there is provided a simple and economical form of mounting for damper or draft regulator which is so con structed as to be adjustable for varying thicknesses of wall and plaster so as to bring the cover plate to a position flush against the surface of the wall, where it will present a neat appearance and cannot be easily tampered with, the pitch of the spiral groove being such that the cover plate will be se curely held in position.

The invention herein disclosed is not limited to exact form-or proportions but may be varied or modified within the scope of the invention defined by the claims ap pended hereto.


1. A draft regulator comprising a dam per, a rotary shaft for the damper, a tubular housing to receive the shaft, a longitudinally adjustable extension on said housing, means to secure said extension in varying positions of adjustment so as to be flush with a wall, a cover plate on the end of the extension, spiral grooves in the cover plate and pins on the extension adapted to be received in the grooves, whereby the cover plate can be rotated into positionsat varying distances from the end of the extension.

2. A draft regulator comprisinga d am per, a rotary shaft for the damper, a tulmlar housing to receive the shaft, an extension slidably carried by the end of said housing, means to adjustably secure the extension relative to the housing so as to vary the total length thereof. cover plate, said cover plate being telescopically received within the extension and means to hold the cover plate inany position of adjustment relative to the extension.

3. Adraft regulator, comprising a damper,

a shaft for said damper, and means to house the shaft in said wall and permit access thereto, for operation of the damper, said means comprising a tube set within the wall, an extension carried by said tube, means to adjust permanently said extension relative to said tube and removable cover plate said extension and cover plate having co-operat ing means by which the latter may be held in varying positions with respect to the end of the extension.

a. A draft regulator, comprising a damper, a shaft for said damper, and means to house the shaft in said wall and permit access thereto for operation of the damper, said means comprising a tube set within the wall. an extension slidable on said tube, means permanently to adjust the extension with respect to the tube, a removable cover plate rotatively mounted on the extension, said cover plate and said extension having vcooperating spiral. grooves and pins by which the cover plate may be held in varying positions with respect to the end of the extension.

5. A draft regulator, comprising a damper, a shaft for said damper, means to house the shaft within the wall comprising a tube, a tubular extension fitting over the tube, means to secure the extension in any position of telescopic adjustment'on said tube, a bearing plate for the shaft of the damper located in the extension, pins located near the outer end of the extension, a glazed cover plate having a circular flange receivable within the extension and spiral grooves in the flange adapted to pass over the pins.

6. A draft regulator, comprising a damper, a shaft for the damper, and means to house the shaft insaid wall comprising a tubular housing, a longitudinally slidable extension on the outer end of said housing, a pin and slot connection between said housing and. said extension, means associated with said connection to fix the parts inrelative position so as to vary the total. length thereof, a re movable cover plate on the end of said. extension, said extcnsion and cover plate having cooperating spiral grooves and pins by which the cover plate maybe held. in varying positions with respect to the end of the extension and means to operate the shaft secured to the end thereof within thecover plate.

FREDERICK 'KASCH, enonen F. unrr,

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US5207615 *Oct 28, 1991May 4, 1993Edmisten John HDamper assembly for air plenum system
US5921277 *Apr 24, 1997Jul 13, 1999Bernal; Richard G.Air duct damper
US8146887Aug 26, 2009Apr 3, 2012Hayghaz AmirianDamper mechanism