US585694A - Hemoglobinometeh - Google Patents

Description

HEXRY ORFORD, 0F PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO THE QUEEN d: CMPANY, INCORPORATED, 0F SAME PLACE.

SPECIFICATION forming part of Letters Patent No. 585,694, dated July 6, 1891.

HsmoeLosmoME-TER.

Application Sled October 28'J 1898. Serial No. 810.277. Go model.)

To all whom it may concern.'

Be itknown that I, HENRY ORFORD, asubject of the Queen of Great Britain, residing in the city and countyof Philadelphia, State of lcnnsylvania,have invented a newand useful Improvement in Iiemoglobinometeis, which improvement is fullysatforth in the followingspecification and accompanying drawings.

Myinvcntion consists of an improved construction of hemoglobinometer, by means of which I am enabled to readily ascertain the relative or quantitative portion of hemoglobin in blood. am'

It alsoconsists of a novel constructionof a transparentl hollow wed ge-sha ped bod y,whieh is rotatably supported and adapted to be moved to an, desired position relative lo the blood to be tested.

It further consists of novel details of con-V struction, all as will be hereinafter set forth, and specifically pointed ont in the claims. l

Figure 1 represents a side elevation of a hemoglobinomcter or apparatusfor ascertaining thc quantitative proportion of hemoglobin in blood embodyingby invention. Fig. E. represents a plan view of the construction shown in Fig. 1. Fig. 3 represents a section on line .c ur, Fig. 2. Fig. 4. represents a perspective view of the transparent vwedge cmployed.

Similar letters of reference indicate corresponding parts in the several figures.

Referring to the drawings, A designates a `hemoglobinometer, the same consisting ofthe base l5, upon which is supported a pillar or standard C.-

D designates a stage or table which is rigidly secured to said standard by any suitable device, as a screw li, said stage having an opening l" for the purpose of enablinglthe 0pcrator to read the markings on a scale, to be hereinafter referred to.

G' designates an opening in the stage l), in which is located the receptacle il, the latter having a base i., which has a flange J, which is adapted to enter the opening G, said base being provided with a laterally-extending flange h', by means of which the receptacle is lsupported on said stage.

)l designates the outer wall ofthe receptacle, which has fiicpartition N therein, thereby and N2, which are adapted to contain water and blood, respectively.

upon a suitable bearing near the upper portion of the standard C, said sleeve having an inwardlyprojecting shoulder or flange Q, which is adapted to rest on the shoulder R near the upper portion of said standard,

which has on its upper portion the scale S',

having the transparent wedgeshaped chamber T supported therefrom by means of the straps T2, although it is ofcourse evident that convenient means.

The wedge-'shaped chamber T is preferably constructed of glass or other transparent material and is filled with a suitable.colorcdsolution resembling hemoglobin. a

The general contour of the chamber 'P u ill be evident from Fig. 4, the thickest end theretremity thereof being indicated by V.

W desgnatesan annular groove located in adapted to be engaged by thcnosc X of the spring Y, the latter being secured in any suitof the spring and its nose being to hold the sleeve 1 temporarily in any desired position and steady t-he chamber T.

Z designates teeth which are located in the present instance on the lower periphery of the sleeve l, thereby forming an annular rack which is engaged by the teeth of the pinion A', which latter is mounted on the shaft, ll', 'which has its bearings in thestandard C, said shaft li' being readily rotated by means ofthe wheel C', which vmay of course be milled or knul-led, if desired.

D.' designates a bracket or similar support in which a mirror or reflector ll' is pivotally mounted, so that light can bc deflected or concentrated iu thedirectiou of the receptacle Il when desired.

'lhc operation is as follows: The chamber N' is filled with water and the chamber N: with the blood solution to be tested. 'lho chamber 'l is next revolved by means of the of being indicated b U and the thinnest exs'aid plate being attached to the sleeve P and 65.- said receptacle may be supported by other the sleeve P, the walls of which groove are 8o able manner to the standard C, the function man e 4dividing the same into two compartments N' l 4 I designates a. sleeve which is supported 6o.' i. i S designates a latcmlly-extending plate i i l i wheel C' under .the chamber N', and the reflector E' is adjusted so as to properly rellect light upwardly, the chamber containingthe colored solution bei ngslowl y turned until the v two. chambers N and N2 are of the same color,

the result then bcing read off through the opening in the stage D'by means of the opening F, through which the characters on the scale S' are readily visible, it being of course 1o understood that the'same may be graduated to any desired scale or unit of measurement I desire to call especial attention to the sim plieity and effectiveness or' myapparatus, .since the number of parts and the liability of their derangemcnt are reduced to a minimum, and there is in addition 11o-necessity for the employment of an intricate system of graduation and a graduated,rub)-'-glass plate, as has been, heretofore employed.

zo. The wedge-shaped chamberisemployed be cause of its varying thickness, whereby `the color of the standard fluid employed therein becomes more intense. when viewed at; the thickest end of the chamber and less intense when view ed at the thinnest end. This intensity of color is regular in its increase from the thin to the thick end of the chamber on account of the uniform pitch of thechamber itself.

3o By the use of the liquid I am enabled to obtain a standard of exactly the same value for dilerent instruments. This is obvious, as one solution of the same composition may be used for all. This feature is an improvement over the old instrument insomuch as it is impossible to obtain the different Wedf'es of solid glass (used in the old form) of t e same tint in cach case. This then necessi tates the use of a different quantity of blood 4o t'ora test with each individual instrument. Insoniuch as this quantity ofblood must be measured with great precision a calibrated glass pipette is furnished, holding exactly the quantity which when diluted will give the proper reading on the scale when compared with the glass wedge., The loss and breakage, and consequent difficulty of replacement of these pipet'tes, causes much inconvenience to the use of the previously-invcnted form of 5a hemoglobinomcter.

As will readlybe seen from above explanation of my instrument, the same quantity ofi -blood may be used with each individual inwedge-shaped chamber adapted to contain a 'standai'flaid, whose' intensity is increased ber.

2. In. a hemoglobinometer, a standard, a stage thereon with an opening therein, atvroy part receptacle held in said opening, a plate rotatable on said standard, a wedge-shaped 1o chamber secured to said plateand adapted to ,pass beneath one of the parts of said receptacle, and a mirror below and in line with said chamber and receptacle.

3. In a hemoglobinometer, a standard with ,'75

a stage secured thereon,A a two-part recepta cle secured -to said stage, a-plate connectedl with a collar mounted on said standard, an annular wedge-shaped chamber secured to .said plate, mechanism for 'rotating said plate 8o and thereby said chamber, a mirror in line with said chamber and receptacle, and a scale on said plate seen through an opening in said stage i 4. In a hemoglobinoiucter,astandard having a stage rigidly supported thereupon, an opening in said stage, a receptacle adapted to contain blood and water located over said opening, a second. located underneath the latter, a sleeve rotata- 9o blysupported on which said plate ismounted,

a hollow annular transparent wedge-shaped chamber suitably supported, means for rotating said sleeve, a spring bearing on the latter, and adapted to hold the same temporarily-in '95 position, and a reflector.

HENRY ORFORD. Witnesses:

Joux A. Wiunmtsmzxx, x WM. C. WIEDERSHEH.

,from the Vtliin to the thick end of said eham 65 openingin said stage,aplate\"`;l y

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