US 581013 A
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Description (OCR text may contain errors)
(No Model.) 2 Sheets-Sheet 1.
D. SERBER 8v E. JAVITZ.
FOLDING BABY CARRIAGE.
No. 581,013. Patented Apr. '20, 1897.
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' D. SERBER & E. JAVITZ.
FOLDING BABY CARRIAGE.
No. 581,013. Patented Apr. 20, 1897.
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DAVID SERBER AND ELIAS JAVIT Z, OF NEW YORK, N. Y.
FOLDING BABY-CARRIAG E.
SPECIFICATION forming part of Letters Patent No. 581,013, dated. April 20, 1897.
Application filed December 5, 1895. SerialNo. 571,162. (No model.)
To all whom it may concern.-
Be it known that we, DAVID SERBER and ELIAS J AVITZ, subjects of the Emperor of Russia, residing at No. 194 East Broadway, in the city of New York, county of New York, and State of New York, have invented a new and useful Folding Carriage, of which the following is a specification.
Our invention relates to the construction of folding carriages in which linked axles are connected with a folding mechanism by a screw working in bearings on a frame to which folding handles are attached and the whole connected with a superposed folding box by springs; and the objects of our improvement are, first, to make the carriage occupy less space; second, to make the box inclose the folded truck, and thus facilitate its transportation from one place to another, and, third, to make the folding parts rigid when unfolded. ,We attain these objects by the arrangement illustrated in the accompanying drawings, in which Figure 1 is a plan-of the unfolded truck; Fig.- 2, an elevation, and Fig. 4 a rear View, of the same; Fig. 3, a plan of the folded truck; Fig. 5, a section on the line 5 6; Fig. 6, aplan of the box; Fig. 7, an elevation of the same; Fig. 8, a rear elevation of the carriage when unfolded and a section of the box on the line 7 8, showing the position of the box on the truck; Fig. 9, the same when truck is folded and carriage unfolded, and Fig. 10 the same section of the box when it is partly folded.
Similar letters and numerals refer to similar parts throughout the several views.
The axles consist each of four parts CL CL and b b pivoted together, so that a turns around the pin A, and bturns around the pin B. Thus when the axle is unfolded it represents a straight bar, (see Fig. 1,) and when it is folded b is perpendicular to a, Figs. 3 and 9.
Each axle rests on a plate or table 0, which is rigidly connected by braces d d with a crossplate f, Fig. 4, the pin Apassing through both 0 and f. The lower plates or tables 0 o are connected with each other by bars 6 6, thus constituting the lower frame.
On an upper double frame g g, which resting on the cross-plates f f is rigidly connected with them, four sliding boxes at m and a n are free to slide forward and backward. These sliding boxes communicate their motion to the axles by means of connecting-rods h h, each of the latter being pivoted with one end to the pin B and with the other end to the pivot K at the bottom of the sliding boxes m m or n n.
The upper sliding boxes m m by means of inner rods 0 o and the lower boxes n n by means of outer rods 0 0 make one piece with sliding nuts p 19, one of which is right handed and the other left handed, corresponding to the double-handed screw 0" which works in them. This double-handed screw r has no motion of translation, but it rotates in bearings s sin plates 5' z, and to one end of the screw a handle it is fixed. The plates 5 z complete the double frame g g, Fig. 4. Thus when the screw 0" is turned by means of the handle u the nuts 19 p, together with the sliding boxes m m and n n, slide on the frame 9 g,
and through the connecting-rods h it cause the two halves of each axle to turn around the pin A. At the same time the screw 0" keeps the nuts and, through the connecting-rods,the axles in place when the turning of the latter around the pin A is not desired.
WVhen the axles are folded, the nuts 19 p meet at the middle of the frame 9 g, and in order that the nut 19, which is connected by Outer strips 0 o with the lower sliding boxes at n, shall not interfere with the upper sliding boxes m m the latter boxes on m are half open on the top, Figs. -1, 3, and 5, and the said nut p being provided with projections or legs 70 7c slides only on the outer half of the top of g g, thus allowing the boxes m m to slide freely on the other half, Fig. 5.
It is necessary that the parts I) b of the axles shall move parallel to the position which they have when the axles areunfolded; that is, perpendicular to the longitudinal axis of the carriage. Then every point of b will describe a circle whose radius is equal in length to the distance between the pins A- and B and whose center is on a straight line passing through the said point and through A and B. Hence, guides 03 0c are pivoted with one end to E, on the top of b, and with the other end to D, on the bottom of the crossplate f, the distance between E and D being equal to the distance between A and B. In order to avoid the dead-center, which the guides J: a; would reach if the parts a and Z) assume such a relative position that the points A, 13, D, and E are on one straight line, the point E is so located that it is outside of a straight line through A and B when the axle is entirely unfolded and nearer to the outer edge of the top of I), and the center D is found by describing two circles with E as a center, one when the axle is unfolded and the other when the axle is folded, the radii in both cases being equal in length to the distance between A and I3, and the intersection of these circles on the cross-plate f locates the pivot D. Thus the points A, B, D, and E will never be on one straight line during the entire process of folding and the guides will never reach a dead-center.
In order to allow space for the guides be tween fand a, the middle portion 1 2 3 l of the cross-plate f is a trapezoidal box, whose inner side 3 l and top are wanting, Figs. land 3, and through the bottom of which pin A passes, the height of the box being sufficient to allow the guides to move freely between (I, and f, Figs. 2 and 4. Portions of the guideplates a: a? are bent down upon the outer sides of the axles, partly covering the hinges when the axles are unfolded, and upward on the in nor edges of f, thus securing greater rigidity in the axles.
The lower ends of the braces d (7, which connectfand c on the rear side of the carriage, this being also the side where the handle u of the screw is fixed, form joints J J, to which the folding handles U U are hinged. The handles, when unfolded, are fastened to g g by means of hooks V Y, which turn on shafts Y Y, Figs. 2 and 1t, and, when being folded, they turn around the hinges .I .I and assume a position under the lower frame 0 c, as shown in dotted lines in Figs. 2 and 33, L being the cross-brace which joins the two handles at the opposite end.
The box consists of an inner basket F G H M, resting on a bottom N, the latter being rigidly connected with the springs 1 I, Figs. 8 and 9. To the top of all the sides of the inner basket similar sides R S S T are hinged, of which the side T is also hinged to the fixed bottom N with its lower edge, while the other three sides can be fastened to the fixed bottom by means of leather straps X X, as shown in Figs. 8 and 0. Thus the inner basket can be taken off the fixed bottom N and swung around the hinges of T, Fig. 10, until it incloses the folded truck, and the double sides are then fastened to N by means of the same straps X X, Fig. 9.
\Ve do not specify the material nor the shape of the different parts, as these considerations are not essential for our invention, being rather a matter of convenience with regard to the ornamental appearance, or least weight, or easiness of manufacturing and cheapness.
\Vhat we do claim as our invention, and desire to secure by Letters Patent, is-
1. A childs carriage adapted to be folded longitudinally and laterally, having a linked axle pivoted to aframe provided with sliding plates, and connecting-rods pivotally attached to said frame and axles, and means for contracting and expanding said axle and frame, substantially as shown and described.
2. In a folding carriage, a linked axle pivotally attached to the lower frame and also to sliding plates and braces, an upper frame connected to cross-plates in which are sliding boxes pivotally connected by cross-rods to the axle, said boxes having sliding nuts operated by a double-headed screw to expand or contract the truck, substantially as shown and described.
3. In a folding carriage, a box comprising an inner basket, a bottom rigidly connected to springs and adapted to inelose the folded truck and provided with securing devices, substantially as shown and described.
DAVID SE lBEl-l. ELIAS JAYITZ.
Enwan'n PinLLIrs, S. HIsHkix.