US1767530A

US1767530A - Extension device

Info

Publication number: US1767530A
Application number: US337837A
Authority: US
Inventors: Percival W Jones
Original assignee: ROSENHEIM CO Inc
Current assignee: ROSENHEIM CO Inc
Priority date: 1929-02-06
Filing date: 1929-02-06
Publication date: 1930-06-24
Anticipated expiration: 1947-06-24

Description

' June24, 1930. v Pfw. JONES 1,757,530

EXTENS ION DEVICE Filed Feb. 6, 1929 mmmmm( v -,muhnllllllullllllllllllllllllmml'g 4- IN V EN TOR.

Z k/win?! W 1/6/1652 A TTORNEYS.

Patented June 24,1930 I r i i UNITED STATES Parent "FFICE PERCIVAL w. JONES, F WARWICK, RHODE ISLAND, ASSIGNOE TO ROSENHEIM co. Ind;

OF PROVIDENCE, RHODE IFSLA'ND', A COBPORATIQN OF RHODE ISLAND EXTENSION nnvicn Application fil ed February aTiaaa Serial No. 337 ,837.

This invention relates to an extensionjde section with the clamp assembled therewith. vice of the type interposed in a wrist watch It is found in the use of wrist watch bracestrap; and has -for its object to provide an lets desirable to provide an extension device improved means for retaining the sections. which may be unfolded to temporarily in folded position. lengthen the wrist-encircling size of the A further object of the invention is the strap to permit it to be passed over the constructing of the sections so that they hand of the wearer and to provide such a may nest one within the other and be of construction which may have the desired minimum thickness when the deviceis in unfolding action and yet be firnilysecured folded position. l a 1n folded position against usualunfolding A still further object of the invention is strains and to" accomplish these results I the provision of an easily releasable clamp have provided a pairof inturned end finfor securing one of the straps to its section. gers spaced from the top wall ofthe cover With these and other objects in view, the section and have "so shaped. the nd d e 1 inventionconsists of certain novel features of the body section as to snap between these of construction, as will be more fully defi ngers, and the top wall of the cover sec scribed, and particularly pointed out in the tlon to lock the parts in closed position, d d l i J and in order that the sections may lie close In the accompanying drawings: one to the other, I'have provided alpair of 20 Fig. 1 isa top plan view of the extension links to fit betweenthe opposite walls; ofa

device in folded'position, H palr of sections so thatthey will notover- Fig. 2 is a top view of the extensiondehe one another to increase the thickness of V vice in extended positionshowing the dif the device. I have also provided a novel ferent sections as hinged together. v means for Securing and adjusting of the 25 Fig. 8 is a sectional side View of the device rap to one of the sections, consisting of unfolded, as illustratedin Fig. 2. providing a clamping g 1 h i n Fig. 4 is a sectional view showing the deitself with a p votally mounted shoe to rei pa ti ll f ld d, ceive between it and the clamp edge the Fig. 5 is 'a sectional view showing the'derap'to be attached thereto; and the fol- 30 vice as completely folded in clasped position. lowing 1s a detailed description of thepres- Fig. 6 is a sectional end view of the device ent embodiment of this invention illustratin folded position taken on line 66 of mg P rred means by which these ad Fi 5 V vantages results may be accomplished:

Fig. 7 is aperspective view of the end of 71th reference to the drawings, 12 desig- 35 the coversectionshowing one portion of the Hates the body section which' is of channel V Clamp I shape in cross section, having an outer wall Fig. 8 is a perspective view of the clamp 13 nd opposlteside walls 14:: "Atone end which is associated with the portion shown of this body section there-is pivoted at v in Fig? V r g 15 a plate sect1on16, which is hinged at 40 Fig. 9 is a perspective view showing the 17 to' a second plate section 18, both of parts of Figs? and 8 in assembled P08111011. which maybe folded one upon the other i Fig. 10 is a sectional view tliroughthe to house n the channel section 12, asis ilpivoting trunnionsof Fig. 9. lustlflted 111 g; 1- Fig. 11 is a sectional view of the assembly The P a $901510]? 18 13 0t l n e r f Fi 9 V 7 than the body section 14 and on that'po'rtion Fig. 12 is a fragmental perspective view 19 thereof which extends beyond the end of a modification of the end section. of the body sect on 12 when'in folded posi Fig. 13 is a perspective view of the clamp t1on,I have provided a'pair of spaced flanges associated therewith- 196131116611 W there IS P QCl a gripper Fig. 14 is a section of the modified end 21 havinga camlng edge 22 to bind between this edge and the plate 18, one end 23 of a suitable strap 24, as illustrated in Fig. 1.

The cover section 25 is of channel shape in cross section having an outer wall 26 and side walls 27, and is connected to the body section by an intermediate section formed of a pair of links 28 pivoted as at 29 and 30 tothe respective side walls 14 and 27 of these two sections so as to swing thereover and cover the plate sect-

ions

16 and 18 when folded therein.

This cover section 25 is of a width greater than the body section so that its channel walls 27 will not only receive between them to lie between the side walls of the sections so that all of the parts nest one within the other and the links 28 will not overlie the

plate sections

16 and 18 to increase the thickness of the device when in folded position, but rather will merely tend to increase the general width of the-device by a dimension equal to the thickness of the sheet stock from which they are formed.

The cover section is extended at its free end 31 with a downwardly turned jaw 32, and on the sides of this extension trunnions 33 are provided to pivotally mount a shoe 34 having a strap engaging surface35 with flanges 36 to receive in openings 37 the trunnions 33. When the shoe is in the position illustrated in Figs. 3,4 and 9, the strap end 40 will be held between the jaw 32 and the strap engaging surface 35 to releasably secure this end of the strap to the device. I

For some constructions, however, I prefer to reduce the end portion of the end section, as illustrated at 41 in Fig. 12, to conform to the appearance of one of the links of the strap which is flanged at 42 with openings 43 therein to receive the trunnions 44; of the gripper 45 which operates in the same manner as the gripper 21 on the opposite end section. r

In order that the sections may be retained in folded position, I have provided a pair of fingers 38 on the end edges of the side walls 27 of the cover section, which extend toward each other. These fingers 38 are positioned at a point spaced from the top or outer wall of this section and receive in this space the rounded ends 39 of the edges of the side walls 14: to firmly clamp the two channel sections together.

It will be understood that there is sufficient resiliency in the inturned fingers thus formed to permit of snapping and unsnapping of the sections to and from folded position for the desired purposes hereinbefore mentioned.

The foregoing description is directed solely towards the construction illustrated, but I desire it to beunderstood that I reserve the privilege of resorting to all the mechanical changes to which the device is susceptible, the invention being defined and limited only by the terms of the appended claims.

I claim:

1. In an extension device, a plurality of sections, means for connecting said sections together to permit folding one on the other, one section having an outer wall and spaced side portions, said spaced side portions having fingers extending therefrom toward each other and spaced from the outer wall and another of said sections having portions at its free end to snap between said fingers and said outer wall due to resiliency of said fingers in a direction longitudinally of the device. 7

2. In an extension device, a channel shaped body having an outer wall and side walls,- a cover section channel shaped in cross section'and having an outer wall and side walls, an intermediate section hingedly attached to said sections to permit foldingof the channel sections one on the other, fingers extending toward each other from the free end edges of the opposite side walls of one of said channel sections and spaced from its outer wall, the free end edges of said other channel section having rounded nose portionsto snap between said fingers and'said outerwall by resiliency of said fingers in a direction longitudinally of the device and hold said sectionscin folded position. f

3. In an extension device, a channelshaped body section having an outer wall and side walls, a cover section channelshaped in cross section having an outer wall and side walls, a pair of links hingedly connecting said sections to, permit folding of the sections one on the other, fingers extending toward each other from the free end edges of the opposite side walls of one of said channel sections and spaced from said outer wall, the free end edges of the other channel section having rounded nose por-- tions to resiliently snap between said fingers and said outer wall by resiliency of said fingers in a direction longitudinally of the device and hold said sections in folded position.

4. In an extension device, a plurality of sections, means for connecting said sections together to permit folding one on the other, one end section having means for attaching a strap thereto, comprising a downwardly-turned lip on the edge of said section,

and a member pivoted on the section to swing towards and from said lip to press the strap into direct clamping engagement with the edge of said lip. V

5. In an extension device, a plurality of sections, means for connecting said sections together to permit folding one on the other,

one end section extending beyond another section when in folded position and having a lip extending at an angle thereto, and a member on the section pivoted to swing towards and from said lip to press the strap into direct clamping engagement with the edge of said lip.

6. In an extension device, a plurality of sections, means for connecting said sections together to permit folding one on the other, one end section extending beyond the other section when in folded position and having a lip extending at an angle thereto, trunnions extending from both sides of said extension, a plate having side ears with openings therein adjacent the end edge of the plate to receive said trunnions and pivotally mount the same to swing and receive between it and the lip a strap to be attached thereto, to press the strap intodirect clamping engagement with the edge of the lip.

Intestimony whereof I aflix my signature.

PERCIVAL W. JONES.