US1655087A

US1655087A - Shade mount shade mountihg

Info

Publication number: US1655087A
Authority: US
Publication date: 1928-01-03
Anticipated expiration: 1945-01-03

Description

' Jan. 3, 1928.

A. BOSTROEM SHADE MOUNTING Filed July 24, 1924 l atented Jan. 3, 1928.

UNITEDSTATES PATENT nueusr nosrnonm, or ROSELLE, NEW JERSEY, nssrenonto s. nonnn'r sorrwan'rz, or

' I i i new YORK, N. Y.

SHADE MOUNTING.

Application filed Jul as, 192;. SeriaI No. 728,041.

My invention relates to new'andusetul improvements in meanst'or mounting reflectors or shades, particularly of the type disclosed in United States- Letters Patent No.

51,486,319, granted to m'e March ll, 1924 f In the above patent there is described a removably mounted reflectorpivotally supported at both ends. To provlde this mounting the reflectorhas at one end a keyholeshaped slot which seats on abushing provided on the lamp bracket, and at its other end with a hole through which passes a screwor stud carrying the parts necessary to clamp the reflector in any desired position of adjustment. e y e e e e My improvement consists mainly in providing a unitary device which I term a shade. lock and which serves to permit ready mounting and removal and to prevent accidental removal of the reflector from its mounting and to. hold same in any adjusted position without extra manipulation such as looking. At any time the reflector may be adjustedby simply setting it into the desired position. In this position the reflector remains until further adjustment is made. (lo-operating with the shade lock are various other elements as will be fully described While my invention is shown applied to a reflector it' is obvious that it may have many otherapplications and it is understood that I do not limitmyselif to this specific disclosure. Q e p e Referring to the drawings: 7 Fig. 1 shows a portable electric desk lamp to which my invention has been applied.

Fig. 2 is a longitudinal crossesectional view through the reflector and adjacent parts ofthe lamp shown in. Fig. 1. i 3

Fig. 3 is a view of the front elevation of the shade lock.

. Fig. 4: is a view. inside elevation of the shade lock. c r

Fig. 5 is a view in rear elevationof the sh'adelock. i

Fig. 6 isa cross-sectional view taken on the line ww of Fig. 5 in the direction of the arrows. r

Fig.17fis a" view identical with that of Fig. 6 except that the latch, later described, has been moved to a ditlerentposition.

Fig. 8 is a view in perspective of the shade lock.

Fig. 9 is a bottom plan view of the shade g look.

Referring to the drawings in detail, A is a reflector of the type described in my Patent No. 1,486,319, above referred to, B is a sup porting bracket on which reflector A is pivotally mounted. The bracket can be raised or lowered by adjusting a swivel joint 0 held in the lamp base D. The bracket carries an incandescent lamp socket in which an incandescent lamp bulb F may be placed. Current is supplied by the wiring Gr passing through bracket B, made tubular for that purpose.

As tar as described the construction is old and well-known. Vie now come to the features peculiar to my invention.

H is a shade lock pivotally mounted on the bracket B. It is of such shape that it will tit into the key-hole shaped slot'L provided in reflector A. I is a pin carried by the bracket 13 which fits into hole K in the reflector and provides a pivotal mounting for same. It willbe clear that the reflector is thus pivotally mounted on the bracket on an axis deiined by the pin l on the one hand and the shade lock on the other.

AS described in my Patent 1,486,319, abe ye referred to, the tunctionoii' the keyhoiefshaped slot L isfto permit ready re moval oi the reflector A by sliding the same laterally over the bracket (accomplished as by moving" the reflector to the left in Fig. 2 after slot L and thebracket are aligned). The shade lock H is so constructed that this lateral motioncan take place when a part which I term the latch, which will be more fully described, is depressed, but unless this latch is depressed it is impossible to move the reflector laterally to an extent sufficient to. remove it from its mountin while et permitting pivotal adjustment of the refleC- 5 tor. e i i The shade lock consists of. a main frame 9, which in the prei'erred embodiment is a stamping, but which may also be formed by other processes such as casting and forg- 10 ing. This frame is provided with a cylindricalportion 10 adapted to. fit into. the rounded portion of theslot L in the shade and with a flange 10, which, as. appears from Fig. 2, serves to retain the shade in place while at the same time strengthening the frame. The :trame 9 is further provided with a longitudinal portion comprising two

steps

12 and 11 so as to form a recess for the

parts

21 and 22. A tongue 14: is formed I10 main frame 9.

in the main frame by stamping out a small section of the frame thereby leaving an opening 13. Similarly another tongue 16 and opening are formed. The function of the

tongues

14 and 16 is to limit the motion of the latch, as will appear later.

Extending from the portion 10 are a conical portion 17 and a cylindrical portion 19, both of which are broken into four sections by slots 18. A collar 20 with cars 21 through which passes a screw 22 is soldered or riveted at its middle portion 20. Ears 21 and screw 22 are located within the recess formed by 12 and 11 so as to come Within the contour oif part 12 as presented in Fig. 3, and ofler no obstructionto the passage of the slot L thereover. It is ohvio'us that by adjusting the screw 22 the part 19 may be expanded or contracted. The'part 19 seats on a cylindrical portion of the bracket B and pivots thereon. The expansion or contraction of part 19 diminishes or increases the friction between the parts and consequently the'ease with which the shade lock may be moved.

The latch mechanism will now be described.

A spring 24, approximately U-shaped, is soldered or otherwise fastened at 25 to the To its free end is riveted at 27 a rigid piece 26 of angular shape having a lug 28 formed at one end and a portion 29 designed for manipulation at the other.

The lug 28 is triangular in shape, the hypothenuse 30 being formed so that as the key-hole slot L of the reflector is pressed against it in the operation of mounting the shade the le 28 will move inward against the action of spring 24 and will move outward again as soon as the reflector has passed beyond the lug. It is clear that the square shoulder ofthe lug will prevent removal of the reflector by motion in the reverse direction unless the lug 28 is first broughtout the way by pressure on part 29 01' the lateln The latch may also be manually operated when putting the refiector into place, instead of depending on the automatic action described. The purpose of tongues'l t and 16 is to limit the motion of the latch as will appear from the drawings, particularly 7 and 8.

Summarizing the functions of the various parts it will be noted that the reflector is readily placed on the bracket and that once in place it is held there until the latch 29 is operated to effect its release and that the reflector is at all times pivotally adjustable. The ease of adjustment is conof the reflector 'niarred nor broken by the blow but will simply turn about its pivot.

I claim:

1. In a lamp, a reflector mounted pivotally and capable of sliding laterally, sup porting means for the reflector, retaining means pivotally mounted on the supporting means and a spring catch on the retaining means engaging the reflector to limit its lateral movement.

2. In a lamp, :1. reflector, mounted pivotally and capable of sliding laterally, supporting means for the reflector, retaining means pivotally mounted on the supporting means and comprising a shoulder engaging the reflector to limit its lateral movement in one direction and a spring catch engaging the reflector to limit its lateral movement in the opposite direction.

In a lamp, a reflector, supporting means for same, a key-hole shaped slot in one end of the reflector, retaining means pivotally mounted on the supporting means and fitting into the slot as to term a seat for the reflector and carrying locking means to prevent withdrawal of the reflector from its seat.

In a lamp, a reflector, supporting means tor same, a key-hole shaped slot in one end of the reflector: retaining means pivotally mounted on the supporting means in adjustable frictional engagement thercwith and fitting into the slot so as to form a seat for the reflector, said retaining means carrying locking means to prevent withdrawal ot' the reflector from its seat.

'5. ln a lamp, a reflector having a hole at one end and a. key-hole shaped slot at its other end, a supporting bracket, a stud on the bracket engaging the hole in the roller:- tor, a shade lock conforming in contour to the slot passing through the slot and frictionally and pivotally seated on the bracket, a shoulder on the shade lock for hunting the lateral motion of the reflector in one direction and a. springactuated latch on the shade lock for limiting lateral motion in the opposite direct-ion.

In testimony whereof, I have signed my name to this specification.

AUGUST BOSTROEM.

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