US1237362A - Protecting means for x-ray tubes and the like. - Google Patents

Description

W. MEYER. PROTECTING MEANSFOR X-RAY TUBES AND THE LIKE.

APPLICATION FILED JAN-21.1916. v

Patented Aug. 21-, 1917.

2 SHEETSSHEET l.

DGWQQQRBQ LQ N W. MEYER.

PROTECTING MEANS FOR X-RAY TUBES AND THE LIKE.

APPLICATION FILED JAN. 21., I916;

Patented Aug. 21', 1917.

2 SHEETS-SHEET 2.

K M/J OFFIGE v j WILLIAM MEYER, cnidneq rmlmors.

I t r connect the lowerratingtube when the 55 ,Befihknown that 1, WJVIIJIJJIAIM MnmR,ya 1 11glie1 ratingtuhe is employed; p citizen'ofthe United States, residing at Chi? lVlyjinVentibn provides ine'ans. for autocago; in the county of Cook vand State of lnatically' opening the line beyond the tube Illinois, hayewinvented a certainfnew. and that i's connected Whenthe particulartube useful Improvement in Protecting Means 1s connected. ,The attachment of the near- .60

fOl:X-R Ly Tubes and the like, of which the; est tuh'e in each case opensthe circuit for following isa full, clearf concise, and "exact therreinote tube or tubes so that when the description, referenceheinghad toQthe ac sourcelof current isapplie'cl and regulated colnpanying 1 drawings, forming a part to limilu'ce the propeifintens ty of discharge v thisspecification p y a er w ll no!danger .miu'r ga y h r M invention relatesto a system of disk tube ortuhes even thoughdthe same should" tribution of current forv X-ray tubes or the ren ain E iconneeted to the distributing mains.

} like, ancl more particularly; to protecting, 1,1 1 the accompanying t lraivingsQI h aye means "for automaticallydisconnecting alow. ill strated one embodime t f: my i current capacityX-ray tube hena tubeof j 131011 s v I v'70 Q greater current capacityisconnected." lii'gurejl is a diagram of the system Icon- Y I liaye'found that it is often desirable to'v rstru cteclin accordance With my invention einploy ,X-'ray 'tubes of different discharge Qis elevatioii of the automatic 2O capacities fordifferent classes of work that". sw tchingand connectingmechanism; and r istosay I einployone tube; for fluoroscopy Fig: 3 1s an end view of the same. t 75 and another tube for radiography. The 1 li'ijFig lthe source of current fojr-excitr characteristics of the two classes of'workf ingtheXraytubes 1 and 2' is connected to (lifter materially. lin thefluoifoscopic ork; the adjustable spark gap terminals 3 and 4- a small amount of current is employed mm which mounted on suitable pillars 5 and" relatively feeble discharge "OCOuISu '"It is G Oll ltlk cabinet 7., I g

oftenfnecessary, in fluoroscopic Work tosuh The] cabinet 7 is preferably of the type jest the patient to the X-ray fora consiclerdisclosed in my co-pencling application, Se- I able length oftiine. For radiography, the rial 'N 267Q8filed' May 8th, 1915, having current, required for proper workis rela-r suitable eontml mechanism, diagrammati- I tively great to secure a quick andintense callyillustratek:l atsandf and'an alnnieter, 85 exposure Thetwo'classes of Work are often as indicated at 10 for regulating the earriedon intliiferent rooms and a singlestrength of currentfl It is to be understoddsource of "current is employecl tosupply each that anyfdesirecl type of inechanisni niay be tube with current. The current source employed for furnishing current of a proper g'u-m ided with suitahleregulating ineans to character for the tulires lancl It is neces- 90 supply the proper current value to eachl of sary only that the current supply means he the tubes Where a single source of 'curprovided with suitable regulating means to 'rentuis utilized, the two] tubes may he supprovide Current of one strength for the tube 40 pliedwith current overfanfaerial distribut 1 and current lofanothelf strength for the,

111 line. WVhenlthe fluoroscopytube is to. ti he Q, ,Thetube 2 maybe employed in a'95 he nsecl the tube is connected to the aerial-g separate rooin as is indicated by the Wall 11.

line and the currentsource is regulated to limi offiaerjial mains lZ and earesu v i give a'l'ow current value suchas is proper pended ineansofthe, insulators 14 and 15 i Fo'rthisclassfofwork; i a T v I froinsuitahle supports such as the cross! When the radiography tube isto beerm bars 1.6 and li. Theo-verheati mains 12 anclfl plfoyed, it is necessary to disconnect the 13am 'connec tedtothe terminals 3; and' 4, fluoifoscopy tuhe orthe same wouldbe'inf' respectively, in eans'vof the. fleX'ible'metal-f jurecl hy the heavy currentlwhieh would flow he leads 1 8 and 119,." The e fl ible 'f t flid threughit if the current soutcewerfe regu leads are connected "to'a spring reel' con late" "give lthe'increased outputrequired; tained a suitable metallic'shell EZOXsaicl 1 a by radiographytube. Thereisalways shell being connectedthrough the proper grave anger, ofclamajgingthe lowerratin'g conductor. The/conductors 18 and 19 are To dZZiokmn it may cancer raj its 1 's 9 time if er Oper te? d s snows-Korma MEANS non mm; Tunas AND THE LIKE.

iA pp lication filed Januaryz'r, 1916., Seria1 1\To. 74,536, I i l thi continuouslyunder a ten- Specification of Letters Patent. ate t w g-31,1917;

r a to sion which servestokeep them taut and to -keep the ends Lfirinly in contactlwith' the body to which they are connected. The tube 2 is connected through the mains 12 and. 13

v .by means of similar flexible conductors 21,

22, held under the tension of the springs contained in the cases 20. The reel allows up as desired.

The tube 2 is allowed to remain connected with the mains 12 and 13 as the apparatus 'wliiclrcoiinects"the tube 1' to these mains automatically disconnects the tube 2. a i

The gravity closed switches 23 and 24 convI nect thedistant ofthe mains12 andfl13 .with'the ends'adj'acent the source of current. But when the tube 1 is connected the switch" i's"automati'ca lly opened to render the remote portion of the mains dead, and

thus disconnect the tube 2. The structure of the automatically operating mechanismisshown'in o're clearly in Fig; 2. The switch comprises abai of insulation 25, preferably a v of cylindrical shape; having a metal disk 26 secured on the remote end thereof, and a slotted metal sleeve27 connected to theop-,

posite end thereof.

' The d'skee and the sleeve 27 are connected to' the respective portions of the main-12113 means of suitable eyes or hooks .LQSand 29,'jrespectivel y. A thin arm, preferably constructed of 'sheet metal, 30, is pivoted upon a pin- 31; whichpassesthrough the sleeve 27 and to the end of the insulatii' igjjrocl 25; The upper end ofithe arm 30 .is connected by means of a rod 32 to a counterbalanciiig weight 33. i The lower end of the arm 30 is connected to a l'i glit switching arm 34 which extends to a point beyond,

th'e'disk 2-6 so that the counterweight 33 will always press the switch arm 34 and the 26 together to make contact unless the action is interfered with by the reel or otherwise. -The' reel 35 is i'connected by i means of aswivel 36 anda hool'r37 to the arm; 34adjacent' the pivot 31 in order that "the counterbalai'icing weight 33' will overcometlie weight of the arm 34 and of the reel 35; The arm'34 is preferably made of aluminum or is otherwise constructed of .eli'gl'it weight in orderftojobyiate the neces-, si'ty of" a heavy co 'iiiterweight 33.7 The reel 35 is provided with a spring roller uponthe interior; thereof which automatically takes up the excess tapefor cord which is:

employeda' The reel 35 preferably employs a fiexijhle metallic tape which will, Wind flat upon a the sp ning l roller above mentioned; To -theend o'f the flat tape or ribbon. I secure a, flexible cylindrical conductor 38 which may becovered with suitable insulation and which has upon the end thereof a suitable hook 39l ,Thefstructure of the switch is identical with tlia'tof the above described" switch."

the fiexible cord to be extended or wound When the hook of theflexible conductor 38 is attached to the X-ray tube 1, the switch blade 34 is pulled down into the dotted line a position shown in Fig. 2. The tension of the spring roller in the reel 35 holds the switch blade iiuthe open nposition and thus protects the tube 2 so long as the tube 1 is connected. The flexible tape or ribbon 40 would alone serve the purpose of making suitable connection but the same is inconvenient to grasp with the hand and the provision of thec'ylindi'ical' flexible convductor 38 upon the end of the metallic ribhon iO provic'les a greatly appreciated con- Veni'ence; The operation of the system will now be apparent. The low ci'irre'nt'capacity tube 2 is always connected to' the mains 12 and 13iaiid the operator, knowing this regulates the source of current at the cabinet 7; so as t'o" put no greater voltage upon the mains12 and 13 than will cause the proper amount of current to flow through the tube 2'; If it is desired to use'the tube 1, the current is shut off and the operator grasps the fiexiblecord 38, unwinds the reel 35, at-

taching'the hook 39- to the proper teri'ninal of the tube. The spri'ngtension ofthe reel 35 automatically opens the" switch blade- 34, I disco'nnectingithe remote end of the mains thereby. In a similar manner when the hook" 41 is connected to the other terminal of the tube the line wire 12 is opened 1 can be disconnected, there is no danger ofthe switches 23 and 24 being closed before the current is shut off at the cabinet 7.

It is apparent that the details of construed tion of the switcli that I have illustrated may be yariednvithout departing from my invention as the form and proportions that I ,have'shown are not strictly essential for obtaining the benefit of the same.

llvhat' I claim is: V 1. Incombinatiom a pair of relatively stationary terminals, a movable switch blade pivotedto one of said terminals a counterbalancing weight, for moving said switch blade into contact with said otherterminal,

a conductor a and spring take-ups means connected to said conductor, the spring in the take-up means being adapted to exert a greater pull than the pull caused by the weight, said take-up means being adapted to hold the switch blade open when the con ductor is extended.

2.:In comb'nation a switch having open 'and,close,d positions; means fOIYYlGldlIlglY holding the switch in one of said positions,.

a. conductor having connection with the switch, yielding take-up means in said conductor, said yielding take-up meansbeing adapted to exert a pull greaterthan' that of the yielding holding means and to hold the switch open when the conductor is extended.

3. In combination, a rod of insulation, having a metallic disk secured to one end, a metallic sleeve secured to the other, a slot in said sleeve, aswitch arm pivoted in said slot and connected with said sleeve, means for normally holdlng said swltch blade against said disk, a conductor forconnecting said blade with a load deviceandspring means connected to said blade and a porswitch blade open. i

4, In combinatlon, a body of lnsulatlon, a stationary terminal secured to sald nsulatlon,

tion of said conductor for holdingsaid a second stationary terminal secured to the other end of sald body of 1nsulatlon, aswitch,

blade for connecting said terminals, means for holding said switch blade in closed position, an extensible conductor for connecting said blade witha load device and spring take-up means for said extensible conductor for moving said switch bladeto the open position,

said take up'means being adapted tohold the switch blade open whenthe conductor'is minals, a movable switch blade for connect mg StlCl terminals, means for holding said switch blade normally in closed position, a

spring reel having a'metallic casing secured to saidswitch blade, a flexible extensible conductor for connection wlth said metalllc casing, said reel having a spring for opening said switch blade and for holding said flexible conductor taut when the conductor.

is extended.

7. In a switch adapted to be connected in ati'ansmis'sion line, a rigid body of insula-v tion, aterminal rigidly mountedupon said body, a second terminal mounted upon said body, a switch blade for connecting said terminals, means for normally holding said switch blade closed and a spring take-up e01 duct-or for connecting said switch blade with another terminal, the spring in said take-up being strong enough to hold said switch blade open when the conductor is extended.

8. In combination a bar of insulating material, a metallic sleeve on one end of said bar, a metallic flange on the other end of sald bar, said sleeve and flange being adapted to be connected in a transmission line, s'ald sleeveand said bar having a slot there through, a switch blade pivoted in said slot, said switch blade being adapted to connect said sleeve with said flange, and a counter balance connected to said switch blade for holding said switch blade in normal contact wlth said flange.

[9; In combination a bar of insulating material, a metallic sleeve on one end of said bar, a metallic flange on the other end of said bar, said sleeve and flange being adapted to be connected in a transmission line, said sleeve and said bar having a slot there through, a switch blade pivoted in said slot,

said switch blade being adapted to connect sald sleeve wlth sald flange, and a counterbalance connected to said switch blade for holding said switch blade in normal contact with said flange, and a spring take-up conductor connected to said switch blade and adapted to hold said blade open against said counterbalance when the conductor is connected. to a stat1onary terminal.

10. In combination a pair of switch terminals adapted to be connected serially in a transmission line, an insulating member rlgidlv supporting said terminals in fixed re-' lation with respect to each other, a switch blade adapted to make contact between said terminals. means tending to close said switch blade, said switch blade beingpermanently connected to the terminal nearest the source of'current, an apparatus terminal adapted to be supported rigidlv at various distances from said switch blade, and a branch conductor comprising a spring take-up conductor mechanically and electrically connected to said switch-bla de, said spring takeup conductor being adapted when extended and attached to said terminal to hold the from the terminal remote from the source of current.

In witness whereof, I hereunto subscribe name this 18th day of January A. D.

Copies of this patent may be obtained for fivec'ents each, by addressing the Commissioner of Patents,

Washington, D. 6.?

Images