US 595450 A
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(No Model.) 2 sheets shee t l.
I. 'B. ARCHER CHAIR ATTACHMENT.
N0. 595,450 Patented Dec. 14, 1897.
v mlhir 2 Sheets-Sheet 2.
(N0 ModeL) 1. B. ARCHER. CHAIR ATTACHMENT. No. 595,450.
Patented Jae-3.14, 1897.
Inverzzzn" I UNITED- STATES PATENT OFFICE.
IRA ARCHER, OF NORTH SAN JUAN, CALIFORNIA.
CHAIR ATTACH M ENT.
SPECIFICATION forming part of Letters Patent No; 595,450, dated December 14, 1897. Application filed July 19, 1897. Berial IIo. 645,ll3. (No model.)
.To all whom it may concern.-
Be it known that I, IRA B. ARCHER, a citizen of the United States, residing at North San Juan, in the county of Nevada and State of California, have invented certain new and useful Improvements in Chair Attachments; and I do declare the following to be a full, clear, and exact description of the invention,
such as will enable others skilled in the art to able, so as to support the chair at various elevations and also at various angles of inclina tion, so as to adapt it to be used as a barbers chair or-dentists chair.
Another object is to provide in conjunction with the chair-supporting attachments an adjustable foot-rest for the person seated in the chair.
The invention also contemplates detachably connecting the chair-supporting attachments and the foot-rest with a chair and so constructing the said attachments and footrest as to permit of them being conveniently carried about by traveling dentists, barbers, and the like.
Other objects and advantages of the invention will be fully understood from the fol lowing description and claims when taken in conjunction with the annexed drawings, in which Figure 1 is a perspective View of an ordi-- nary chair equipped with my improved sup porting attachments and foot-rest. Fig. 2 is an enlarged detail section illustrating the foot-rest and the manner of connecting the same to one of the supporting attachments. 1
Fig. 3 is a detail section taken in the plane indicated by the line y y of Fig. 2. Fig. 4 is a detail perspective view illustrating the up per member of one supporting attachment and the box thereon for receiving and guiding the lower member, the spring carried by said box being omitted. Fig. 5 is a perspective view of the said spring removed from the box. Fig. 6 is a detail perspective view of thedo'g'for engaging the teeth of the lower member of the supporting attachment and supporting the box and upper member. Fig. 7 is a section taken in the plane indicated-by with and disengaged from the teeth 0.
the line ww of Fig. 3. Fig. 8 is a section taken in the plane indicated by the line m m of Fig. 2. Fig. 9 is a detail section of a modification hereinafter referred to. Fig. 10 is a section taken in the plane indicated by the line 'y y of Fig. 9, and Fig. 11 is a sectional View illustrating a modified construction of dog.
Referring by letter to said drawings, and more particularly to Figs. l'to 8 thereof, A indicates an ordinary chair having legs a, and B indicates my improved attachments for supporting the chair in a raised position, one of said attachments being connected to each leg at, as shown. These attachments B are similar in construction and therefore a description of the one illustrated in detail will suflice for all. This attachment B in the preferred embodiment of my invention comprises a lower member 5, provided on one side with .teeth 0, an upper member d, a box e, fixedly direction of its length on the lower member I), and it is connected to the upper member d by the extended ends of a removable transverse pin '6 in said member d, whose ends rest in the grooves j in the inner sides of its side walls, as shown. The grooves 7 have the lower horizontal portions, as shown, and consequently it will be perceived that they will permit the dog to move in the direction of its length on the upper member-d, so as to enable its wall h to be placed in engagement The said dog f is normally held in engagement with the teeth 0 of the lower member 6 by a flat spring 7c, which is arranged in the open side of the box e, between the side walls thereof, and bears against one end of the dog, as shown. The said spring preferably comprises two leaves m, adj ustably connected by a loop n, whereby its strength may be increased or diminished, as desired, and it may be secured in position by having its upper end interposed between the portion p of the box e and the'upper member at by connecting it to the member 01 by a screw (1 or by binding it against said member dby a camlever r, pivotally connected to the box 0, or by all of these, as desired. It is obvious, however, that when the screw q is employed alone or in conjunction with the other fastening devices the leaves of the spring cannot be adjusted with respect to each other.
In virtue of the construction thus far described it will be seen that when it is desired to increase the length of the attachment B it is simply necessary to draw the members I) e in opposite directions, when the teeth 0 of the 5 member I) will ride over the engaging wall h of the dog f. lVhen, however, weight is imposed on the upper member (1, it will be seen that the dog will be supported by the tooth of the lower member I) and will serve in turn to support the box 6 and the upper member (1. \Vhen weight is imposed on the upper member 01 and it is desired to lower the same, it is simply necessary to strike the end of the dog f opposite to that against which the spring bears a sharp blow with a hammer, so as to move the dog in the direction of its length, when the dog will be disengaged from the tooth c of the member I), and moving downwardly by reason of the weight on the upper member will automatically engage the next lower tooth.
It is desirable in some cases for the sake of safety to fix the dog f against endwise movement and thereby prevent adjustment of the members 11 d with respect to each other. To this end I provide an additional transverse aperture 5 in the upper member (I to receive the removable pin 1' and the grooves 15 in the side walls of the dog f to receive the extended ends of the removable pin 1' when the same is in the aperture .9 of the member d.
lVhen the dogfis to be fixed against endwise movement and the members I) (Z fixed against movement with respect to each other, the member I) is drawn downwardly and out of the box 6 and the opening in the dog f. The said dog is then removed from the member d, and the pin 1 is removed from the lower aperture in member d and placed in the upper aperture 8 thereof. \Vith this done the member I) is replaced in the opening of the dogfand box 6 and the said dog fis moved upwardly, so as to enable the extended ends of the pin i to enter the mouth of its grooves tand seat in the inner ends thereof. Such upward movement of the dog will be accompanied by an endwise movement thereof, which will carry its engaging wall h into engagebment with one of the teeth of the memer just stated, it will be seen that so long as weight is imposed on the upper member (1 the dog will be held against endwise movement and the members I) d will be locked against movement with respect to each other. With the parts connected as just described it is simply necessary in order to disconnect the members Z) d to draw the member 7) down- I ient 'barbers or dentists chair.
\Vhen the parts are in the POSition r wardly. This will move the dog f in an endwise direction and permit it to be drawn out of engagement with the ends of pin 3 and off the end of member d.
In lieu of the dogfa dog f, (see Fig. 11,) having elongated openings j and openings t in its side walls, may be employed, if desired.
XVhen desired, the end wall u of the dogf may be used instead of the wall h to engage the teeth 0 of the member I), as shown in Fig. 9. When this is done, the side of the member 11 opposite to the toothed side is placed contiguous to the member (I, and the spring 7t, instead of being placed in engagement with the outer side of the end wall of the dog, is
placed in engagement with the inner side .of
said wall, so as to normally hold the opposite end wall in engagement with the teeth ,0 of the member I). This construction operates like that shown in Figs. 1 to 8 and permits of the support attachment being increased or diminished in length whether it is supporting a weight or not.
The upper members d of the attachments B terminate at their upper ends in clampsections "0, (see Fig. 7,) which have apertures w and serve, in conjunction with sections at, having threaded apertures y and screws .2, to detachably connect the attachments to the legs of a chair, as shown in Fig. 1. When it is desired to support the chair with its seat in a horizontal position, the attachments B are made equal in length; but when it is desired to support the chair in a backwardly-inclined position the same may be accomplished by simply making the rear attachments B shorter than the front attachments. In this way it will be appreciated that an ordinary chair may be readily adapted for use as a ,conven- It will also be appreciated that when made of metal or other suitable material the attachments B may be conveniently carried by a traveling dentist or barber and readily placed on an ordinary chair at the home of the patient or customer.
The inner sections 00 of the connectingclamps of the front attachment-s B are provided with loops 0, and in these loops are removably placed the depending portions D of the inner sections E of the arms F of the footrest G. The said sections E terminate at their outer ends in enlargements, and these enlargements are provided on theirinner sides with boxes H, having horizontal sleeves I and oblique sleeves J, as better shown in Fig. 2. These sleeves I J are designed to receive the toothed outer sections K of the arms F, which outer sections K are connected at their outer ends to the ends of a cross-bar L, such connection being preferably a hinged one, as shown, so as to permit of the sections K beingfolded upon the cross-bar when not in use, so as to take up but a minimum amount of space when the foot-rest is packed for shipping.
When the sections K of the foot-rest are placed in the sleeves Iof the boxes H, it will be seen that said sections K will be held in a horizontal position and will also be held against outward movement, no matter how hard the person seated in the chair presses against the bar L. When the sections K are placed in the sleeves J, it will be seen that said sections will be held in an inclined position, but will also be held against outward movement when pressure is imposed onthe bar L. When pressure is removed from the bar L, the sections K, whether in the sleeves I or J, may be readily moved outward, it being simply necessary to press their outer ends upward, so as to enable their teeth to clear the rear end walls of the sleeves. Y
It will be appreciated from the foregoing that my improvements, while very cheap and simple, are such that an ordinary chair may be quickly and easily converted into a convenient dentists or barbers chair without the employment of skilled labor and also without the employment of tools. It will also be seen that the attachments may be as readily disconnected from a chair, and that their use in conjunction with a chair does not mar or otherwise injure the legs thereof.
While the supports or attachments B are adapted especially for supporting a chair in a raised position, I do not desire to be understood as confining myself to such use, as said supports may be used in conjunction with scaffolds, platforms, and other devices to be supported.
Having thus described my invention, What I claim is- 1. In a support, the combination of a lower toothed member, an upper member, a guide receiving the members and connected to the upper member, the dog formed in one piece and disposed below the guide and receiving and loosely connected to the lower end of the upper member so as to enable it to move in the direction of its length on the same and having the bottom wall adapted to engage the teeth of the lower member and the opening in said wall loosely receiving said lower member, and a spring connected to the guideand exerting pressure against the dog, substan tially as specified.
2. The combination of a chair having legs and the attachments detachably connected to the legs of the chair and respectively comprising a lower toothed member, an upper member, a guide receiving the members and connected to the upper member, the dog formed in one piece and disposed below the guide and receiving and loosely connected to the lower end of the upper member so as to enable it to move in the direction of its length on the same and havingthe bottom wall adapted to engage the teeth of the lower member and the opening in said wall loosely receiving said lower member, and a spring connected to the guide and exerting pressure against the dog, substantially as specified.
3. In a support, the combination of a lower toothed member, an upper member, a pin arranged in and having its ends extending from opposite'sides of the upper member, a guide receiving both members and connected to the upper member, a dog receiving the upper member and receiving and adapted to engage the teeth of the lower member; said dog havin g elongated seats in its side walls receiving the ends of the pin in the upper member whereby the dog is enabled to move in the direction of its length, and a spring connected to the guide and exert-ing pressure against the dog, substantially as specified.
4:. In a support, the combination of a lower toothed member, an upper member having transverse apertures and a removable pin with extended ends arranged in one of said apertures and adapted to be removed and placed in the other aperture, a guide connected to the upper member and receiving the lower member, and a dog receiving the upper member and receiving and adapted to engage the teeth of the lower member; the said dog having seats in its side walls adapted to receive the extended ends of the removable pin when the same is in one transverse aperture of the upper member so as to hold the dog in engagement with a tooth of the lower member and also having other seats in its side walls adapted to receive the extended ends of the removable pin when the same is in the other transverse aperture of the upper member so as to permit of the dog being moved out of engagement with the teeth of the lower member when desired, substantially as specified.
5. The combination of a chair having legs, attachments connected to said legs and adapted to support the chair in a raised position, and a foot-rest comprising arms having inner sections detachably connected to the front supporting attachments and provided with sleeves and outer sections toothed on their upper sides and extending through the sleeves of the inner sections, and a cross-bar connecting said outer sections, substantially as specified.
6. The combination of a chair having legs, attachments connected to said legs and adapted to support the chair in a raised position, and a foot-rest comprising arms having inner sections detachably connected to the front supporting attachments and provided with boxes having horizontal and inclined sleeves, and removable outer sections toothed on their upper sides and adapted to extend through the sleeves of the inner sections, and a crossbar connected in a hinged manner to the outer sections of the arms,substantially as specified.
In testimony whereof I affix my signature in presence of two witnesses.
JAMES E. DUNPHEY, W, B. MEEK.
IRA B. ARCHER.