US789514A

US789514A - Storage-battery plate.

Info

Publication number: US789514A
Application number: US21413404A
Authority: US
Inventors: Charles H Whiting
Original assignee: Individual
Current assignee: Individual
Priority date: 1904-06-25
Filing date: 1904-06-25
Publication date: 1905-05-09
Anticipated expiration: 1922-05-09

Description

-IIT

PATBNTBD MAY 9, 1905.

L e w C. H. WHITING.

STORAGE BATTERY PLATE.

APPLICATION FILED TUNE 25,1904..

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CHARLES H. l/VHIIING, OF NENV YORK, N. Y.

STOHGIE-'BTTEHY FLllTE..

SPECIFICATION forming part of Letters Patent No. 789,514, dated May 9, 1905.

Application filed June 25, 1904. Serial No. 214,134.

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Be it known that l, (luARLus H. VnrrrNe, a citizen of the United States, residing at New York, in the county of New York and State of New York, have invented a certain new and useful Improvement in Storage-Battery Plates,of which the fol lowing is a specification.

This invention relates to storage-battery plates or grids made thin and light to diminish the dead-weight and at the same time maintain the necessary rigidity and solidity of the plate or grid as a whole; and the invention pertains to that type of thin and light plates or grids consisting of a plurality of strips or or bars united with an end piece. the strips or bars having the receiving-surfaces for the active material running parallel with the outer side faces of the end piece of the plate or grid, such type of plate or grid being' shown in the Letters Patent to Achille ll/leygret, No. 760,897, dated May 9A, 1964. The effectiveness of this type of plate or grid having depending strips with a delinite space of separation between their side edges has been fully tested and found to be practical in use. It has been found, however, more particularly in connection with plates or grids having the strips or bars of some length, that unless great care is taken in applying the active matter or material the strips or bars will slightly flex or bend, so as not to lie in the same vertical plane, and also will in removing from the mold when east often have the equidistance of the strips or bars disturbed, which while not a detriment to the use of the plate or grid requires more care and attention in making the grids and applying the active material thereto.

The object of the present invention is to insure the maintenance of the strips or bars in the same parallel plane one with the other and without any liability of warping or curving out of a true parallelism for all of the strips or bars; and to this end the invention consists in tying together the adjoining side edges of the several strips or bars in such manner as not to destroy the effectiveness of the delinite separation of one strip or bar from its adjacent strip or bar, as hereinafter more particularly described, and pointed out in the claims.

ln the drawings, Figure l is a side elevation of a plate or grid without the active matter or material applied thereto and having the depending strips or bars tied together, so as to be held in the saine parallel plane by a eross--tie at the lower end, one cross-tie in each separating-space between the strips or bars; Fig. 2, a sectional elevation on line 2 of Fig'. l looking in the direction of the arrow; Fig. 3, a similar view to Fig. l, showing a plurality of cross-ties in each separating-space between the several strips or bars of the plate or grid; Fig. el, a sectional elevation on line 4 of Fig. 3 looking in the direction of the arrow, and Fig. 5 a side elevation showing the lower end of a plate or grid having' its receiving-faces formed with rectangular pockets or recesses and having a continuous cross-tie at the lower end by which the strips or bars will loe held parallel one with the other.

The plate or grid shown is of a rectangular forni and is preferably made of thin metal cast, stamped, or otherwise shaped into form. The construction of plate shown has an upper end piece (t, which furnishes a support for the depending strips or bars 71, the end piece a and strips or bars constituting the plate or grid as a whole. rl`he outer side surfaces or faces of the end piece and the strips or bars are in the same plane, and leach strip or bar has therein a series of openings or perforations c, which furnish passage-ways between the two opposite faces of each strip or bar for applying' the active matter or material which when spread on the two faces of each strip or bar passes through the openings or perforations, thus forming a neck or web by which the active material will be held firmly in place; but instead of the body of each strip or bar having openings or perforations, as shown, such body could be otherwise made so as to present cavities or spaces to receive and retain the active matter or material.

The end piece a and each strip or bar have a border ridge or rib d, which serves to strengthen the plate or grid as a whole and adds to the rigidity of such plate when made of thin material, and these border ridges or ribs also form channels or depressions in which the active matter or material is spread on both sides of the plate or grid and is held lCO in place against sidc and end displacement by the ridges or ribs. The depending strips or bars are definitely separated one from the other by an intervening slot e, extending from the lower edge ot' the end piece a the full length of the strips or bars, separating' the vertical or longitudinal ,edges of the strips one from the other. This slot e between the vertical or longitudinal edges of the strips or bars should be of a suiiicient width to subdivide the area of active matter into divisions each separate and distinct from the other, by which arrangement the expansion and contraction ot the active material on one strip or bar will not be transmitted to the companion strip or bar and etfect a loosening of the active matter or material on the several strips or bars. The expansion and contraction of the active material will only extend over the dimensions of each strip or bar, thus reducing the expansion and contraction to a minimum as compared to a plate or grid in which the body is continuous or in one piece.

The rigidity of the strips or bars is sufficient under ordinary conditionsto prevent the side warping or ileXing of the strip or bar, so as to be out of parallel with the remaining strips or bars; but where the strips or bars are of some length in order to have a positive assurance that the strips or bars will not warp or curve out of true alinement some means should be employed for maintaining the alinement of the bars without affecting the definite separation of one strip or bar from the other. This maintenance of the true parallelism or alinement of the strips or bars with each other is the object of the present invention and is attained by tying one depending strip or bar to its adjacent strip or bar by a ligament or cross-tie, which will leave the definite space or separation virtually intact. This ligament or cross-tie f can be arranged in various ways to attain the result sought. As shown in Figs. l and 2, the ligament or cross-tie f is located at the bottom of each defining-space e and unites the lower end ot each strip or bar to the lower end of its adjacent stripor bar, with the result that the strips or bars are united at their upper end and also at their lower end, with the definite space between the strips or bars remaining in its t'ull effectiveness, thus insuring the maintenance of the strips or bars in true parallelism or alinement and against warping or curving, for one or more of the strips or bars to be out of parallelism or alinement. In Figs. 3 and 4L a plurality oi ligaments or cross-ties f are provided, which ligaments or cross-ties are so arranged as to leave the etiectiveness of the definite-spaced separation of one strip or bar from another intact. The plurality of ligaments or crossties f in the construction shown in Figs. 3 and 4t is more especially intended for use with plates having strips or bars of great length, thus insuring the strips or bars against flexing' or bending, so as to be out ot a true parallelism or alinement to an extent that will impair the etliciency of the battery-plate in use and the maintenance of the strips or bars in parallelism or alinement in shaping or casting the grid and in applying the active matter or material. As shown in Fig` 5, the ligament 0r cross-tie is in the shape of a rib extending continuously across the lower ends of all the strips or bars, which ligament or cross-tie f affords the same protection against warping or curving of the several strips or bars out of parallelism or alinement as does the individual ligament or crosstie in each space c of the construction shown in Figs. l and 2, the ligament or cross-tief of Fig. 5 serving the same purpose and attaining the same end with the same result as do the ligaments or cross-ties in the construction of Figs. l and 2.

It will be seen that with the present invention a grid for a storage-battery plate is furnished in which there is a plurality of strips or bars united with an end piece and detinitely spaced apart or separated from each other a small distance, which strips or bars are maintained in parallelism or alinement and against curving or warping by the tying together ot` the several strips or bars, and that such tying together does not impair the eli'ectiveness and operativeness of the plate as a whole, having its receiving-face made up ot' a plurality otl strips or bars which present each an area ot' receiving' faces or surfaces for the active material that will prevent the effects of expansion and contraction extending from one strip or bar to another strip or bar. The liability of any curving or warping or iieXing or bending that would break the parallelism or alinement of the several strips or bars one with the other is eiiectually guarded against, and this without any deteriorating effects on the denite spacing' apart of the plurality of strips or bars. The active material can be applied with the assurance that when the plate as a whole is iinished the several strips or bars will be in parallelism or alinement onewith the other and will be maintained throughout their entire length equidistant apart without any wavy separation between the strips or bars. The ligament or cross-tie between the several strips or bars is a protection against breakage in shaping or casting the grid and in handling the plate or grid during the application of the active matter or material and until the plate as a whole is completed ready for use, and when fully covered and coated, if so desired, this ligament or cross-tie can be severed, though it left intact it will not interfere with the operation of the plate when in the battery. The plate or grid of the present invention by reason of bridging or cross-tying' one strip or bar to its adjacent strip or bar adds utility and value, as it furnishes a positive assurance that the strips or IOO bars will be maintained in parallelism or alinenient during manufacture, that they will be kept equidistant apart throughout their entire length without any liability of a wavy Separation, and will be protected against breakage in the subsequent.handling ot' the plate until its linal completion ready for uSe.

The construction of plate or grid shown in Fig. has each ot'its strips or bars formed with a plurality of longitudinal ribs y ot' the 'full thickness of the strip or bar, and between the longitudinal ribs on one face of the plate or grid is formed a plurality et' crossbars t, and on the opposite face of the strip or bar is formed a plurality of cross-ribs al, the cross-ribs t and lalternating and furnishing, with the longitudinal ribs, a Series of pockets or depressions overlapping each other for the pockets or depressions to receive and retain the active material.

What If regard as new, and desire to Secure by Letters Patent, is

l. A grid for a storage-battery plate, con- Sisting of an end piece and a plurality of Strips or bars united with the end piece and definitely separated from each other a Small distance apart, each Strip or bar adapted to receive the active material thereon with the receiving-surfaces for the material running parallel with the outer side faces ol'l .the end piece of the plate and the several strips or bars held in proper relation one to the other by crosstying adjoiningl Strips` or bars, Substantially as described.

2. A grid for a storage-battery plate, cousisting of an end piece and a plurality ot' strips or bars united with the end piece and definitely separated one from the other a srnall distance apart, each Strip or bar adapted to receive the active material thereon with the receiving-surfaces for the material running' parallel with the outer Side faces or' the end piece of the plate, and a cross-tie at the lower end of the plate uniting the strips or bars at their lower end and serving to retain the Strips or bars in proper relation one to the other, substantially as described.

CHARLES H. VHITING.

l/Vitnesses:

ARTHUR H. VALKER, JAS. U. CLANCY.