US1685172A - Switch-throwing device - Google Patents

Switch-throwing device Download PDF

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Publication number
US1685172A
US1685172A US182879A US18287927A US1685172A US 1685172 A US1685172 A US 1685172A US 182879 A US182879 A US 182879A US 18287927 A US18287927 A US 18287927A US 1685172 A US1685172 A US 1685172A
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Prior art keywords
bearings
levers
housing
pair
switch
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US182879A
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John L Milton
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Cheatham Electric Switching Device Co
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Cheatham Electric Switching Device Co
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Priority to US182879A priority Critical patent/US1685172A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L5/00—Local operating mechanisms for points or track-mounted scotch-blocks; Visible or audible signals; Local operating mechanisms for visible or audible signals
    • B61L5/06—Electric devices for operating points or scotch-blocks, e.g. using electromotive driving means
    • B61L5/067—Electric devices for operating points or scotch-blocks, e.g. using electromotive driving means using electromagnetic driving means

Definitions

  • My invention relates to improvements in switch throwing devices in which the switch point of a railway track is thrown from one position to another and held by spring pressed parts; and the objects of m v im provements are: first, to provide an ettective holding device for the switch point with a view of minimizing split switches; second, to afford facilities for adjusting the tension on these parts to the maximum of th power that can he applied t'or operating the switch points; third. to provide means for the repeated servicing of parts.
  • Fig. l is a plan view of a preferred form of the mechanism as it appears after the removal of the lid;
  • Fig. 2. is a vertical section of a part of the mechanism along the lin k l of Fig. l Fig. is a vertical section oi" a part of the mechanism along the line R l) of Fig. 1;
  • Fig. 4 is an enlarged section of the spring holding device along the line (l t l at Fig. 1: Fig. 5 a modified form of my invention wherein the device is asseii'ililed as a whole.
  • U link F provides the pivot memher A 7) for effecting the articulation hetween levers AB.
  • This link is also pivoted to plunger (l of the ground magnet housing II which is secured to the ground liox l hv lugs 1. l.
  • Fig. 5 I have shown plunger J of a straight rigid type with pivot Jr: to which is articulated levers A and B which have their outer ends pivoted to lea t' springs (l. C which are n turn secured to the ground ma net housing II by means of arms 11!].
  • IIIZ. which in turn carry fulcrum points H11. H11. Ground magnet housing It also carries arms llc. He. into which adjusting screws I) are mounted for applying pressure similar to that employed in Fig. l. I have arranged the connecting link K so that i! can he articulated to l ver .t as shown n drawing or to eve o'i".
  • Ad 'le joint provided with a pair of ..iig one coziiiiion articulation and l l' pendent hearings at "heir outer ends.
  • a toggle joint provided with a pair of levers ha 'ing one common articulation at their inner ends and indcpcndci'it hearings at their outer ends.
  • one of said hearings heiii t'ulcrumcd to the tree end ot a springiiiemhe i which sulistai'itiallv rigid at the other end.
  • a toggle joint provided with a pair of levers having one common articulation and independent bearings at their outer ends one of said levers being spring pressed by a spring member which is substantially rigid at one end and free at the other end.
  • a toggle joint provided with a pair of levers having one common articulation at their inner ends and independent bearings at their outer ends, one of said levers being spring pressed by a spring member which is substantially rigid at one end and free the other end.
  • a toggle joint provided with a pair of levers having bearings at their ends and one common articulation, each of the other ends being 'i'ulcrumed to the free ends of spring members which are substantially rigid at their other ends.
  • a magnet comprising a solenoid. housing and plunger and a toggle joint provided with a pairot levers having a common articulation and independent bearings at their outer ends which are tulcrumed to the free ends of spring members which are held substantially rigid at the other end by said magnet.

Description

Sept. 25, 1928. 1,685,172
J. L. MILTON SWITCH THROWING DEVICE Filed April 11, 1927 INVENTOR.
Patented Sept. 25, 1928.
UNITED STATES 1,685,172 PATENT OFFICE.
JOHN L. MILTON, OF LOUISVILLE, KENTUCKY, ASSIGNOR TO CHEATHAM ELECTRIC SWITCHING DEVICE COMPANY.
SWITCH-THROWING DEVICE.
Application filed April 11, 1927.
My invention relates to improvements in switch throwing devices in which the switch point of a railway track is thrown from one position to another and held by spring pressed parts; and the objects of m v im provements are: first, to provide an ettective holding device for the switch point with a view of minimizing split switches; second, to afford facilities for adjusting the tension on these parts to the maximum of th power that can he applied t'or operating the switch points; third. to provide means for the repeated servicing of parts.
I attain these ohjects h v the mechanism illustrated in the accompan ving drawing. in which Fig. l is a plan view of a preferred form of the mechanism as it appears after the removal of the lid; Fig. 2. is a vertical section of a part of the mechanism along the lin k l of Fig. l Fig. is a vertical section oi" a part of the mechanism along the line R l) of Fig. 1; Fig. 4 is an enlarged section of the spring holding device along the line (l t l at Fig. 1: Fig. 5 a modified form of my invention wherein the device is asseii'ililed as a whole. The ground box or container 1. its projecting lugs 1 1 and 1 in which is assembled the operating parts, is installed adjacent the track 2 which carries the switch point 2). From the lug or hinge member I is pivoted lever A from which is pivoted lever ll. this in turn is pivoted to leat' spring the latter being rigidly secured to the ground hox through pressure exerted against it hv screw D which is supported in yoke 1. This pro-'- sure forces the leaf spring against tulcriu'ii l an integral part of projection I. It will he seen that the tension of the lea t' spring can be varied hv means ot' adjusting screw I). To lever A, adjustable drag link E is also pivoted loy pin Aa which completes the articulation.
U link F provides the pivot memher A 7) for effecting the articulation hetween levers AB. This link is also pivoted to plunger (l of the ground magnet housing II which is secured to the ground liox l hv lugs 1. l.
(lround magnet housing H is constructed of magnetic material and contains two solenoid windings Ha. Fl?) with a cylindrical opening into which a magnetic plung r operates and so arranged and disposed that the application of current to solenoid Ho will operate the toggle mechanism composed of Serial No. 182,879.
levers A, ll and spring C to the position shown in the drawing by full lines and When current is applied to the other section. H?) the toggle parts will take up the position shown by the dotted lines. From one position to the other the switch point 3 is carried by means of i'orce applied through connectin l nk E. It is apparent that a relativelv liigli rorce will he applied to the switch H point which is the main ohject of the device.
An outstanding teature of this mechanism resides in the tact that hv the use of a lon and powertul leaf spring: a. verv licavv and highl elastic pressure is applied to the toe gie joint which is in marked contrast to that developed hv the conventional spiral springs which are of necessity ouite short and heai'v and ot relatively low elasticitv. Another desirahle result gained ll) thisarrangement is the reduced dead center when i'oiiipared with the conventional tvpe of sprin Attention. is called to the relativelv shortlen th of lever to lever A whica assists in the hold ing force exerted by the spring.
In Fig. 5 I have shown plunger J of a straight rigid type with pivot Jr: to which is articulated levers A and B which have their outer ends pivoted to lea t' springs (l. C which are n turn secured to the ground ma net housing II by means of arms 11!]. IIIZ. which in turn carry fulcrum points H11. H11. Ground magnet housing It also carries arms llc. He. into which adjusting screws I) are mounted for applying pressure similar to that employed in Fig. l. I have arranged the connecting link K so that i! can he articulated to l ver .t as shown n drawing or to eve o'i".
I am aware that prior to mv invention switch throwing devi es have been constructed with spring ])l'i lll't toggle joints.
'ldhrretore. I do not claim sui-h a coiiihination liroadlv: hut. I claim:
I. Ad 'le joint provided with a pair of ..iig one coziiiiion articulation and l l' pendent hearings at "heir outer ends. one I said he "igs heing 't'ulcruiiied to the free end ot a spring i;ie;iiher which sulistantiallv rigid at the other end. i
A toggle joint provided with a pair of levers ha 'ing one common articulation at their inner ends and indcpcndci'it hearings at their outer ends. one of said hearings heiii t'ulcrumcd to the tree end ot a springiiiemhe i which sulistai'itiallv rigid at the other end.
3. A toggle joint provided with a pair of levers having one common articulation and independent bearings at their outer ends one of said levers being spring pressed by a spring member which is substantially rigid at one end and free at the other end.
4. A toggle joint provided with a pair of levers having one common articulation at their inner ends and independent bearings at their outer ends, one of said levers being spring pressed by a spring member which is substantially rigid at one end and free the other end.
5. A toggle joint provided with a pair of levers having bearings at their ends and one common articulation, each of the other ends being 'i'ulcrumed to the free ends of spring members which are substantially rigid at their other ends.
(5. A toggle joint iirovided with a pair oi' levers having bearings at their ends and one common articulation at their inner ends. each of the other ends being i'ulcrumed to the free ends of spring members which substantially rigid at their other ends.
7. The combination ot a housing and a tog gle joint provided with a pair of levers ha ving one common articulation and independent bearings at their outer ends. one of which is attached to the housing, the other one of said bearings being t'ulcrumed to the free end oi a spring member which is substantially rigid at the other end.
8. The combination of a housing and a toggle joint provided with a pair of lovers having one common articulation at their inner ends and independent bearings at their outer ends, one of which is attached to the housing. the other one of said bearings being tulcrumed to the free end of a spring member which is substantially rigid at the other end.
9. The combination of a housing and a toggle. joint provided with a pair of levers having one common articulation and independent bearings at their outer ends, one of which is attached to the housing, the other one of said bearings being iiulcrumed to the tr e end of a spring member which is held substantially rigid at the other end by the ground box.
10. The combination ot a housings; and a toggle joint provided with :1 p;. r ot' levers having one common articulation at their inner ends and independent bearings at their outer ends. one of which is attached to the housing. the other one o i said bearii being tulcrumed to the free end of a spring member which is held substantially rigid at the other end by the ground box.
ll. The -on1binatim1 of a switch point and a toggle joint provided with a pair of levers having one common articulation at their inner ends and independent bearings, one of said bearings being tulcrumed to the free end of a, spring member which is substantially rigid at the other end.
12. The combination of a switch point and a toggle joint provided with a pair of levers having one common articulation at their inner ends and independent bearings at their outer ends, one of said bearings being 't'ulcrumed to the free end of a spring member which is substantially rigid at the other end.
18. The combination of a switch point and a toggle joint provided with a pair of levers having a common articulation at their inner ends and carried by an extension from said switch point and independent bearings at their outer ends, one of said bearings being tulcrumed to the free end of a spring member.
14. The combination ot a housing and a toggle joint provided with a pair of lovers having one common articulation and independent bearings at their outer ends, one of which is attached to the ground box, the other one of said bearings being fulcrumed to the free end of a spring member.
15. The combination of a housing and a toggle joint provided with a pair of levers having one common articulation at their inner ends and independent bearings at their outer ends, one of which is attached to the ground box, the other one of said bearings being tulcrumed to the free end of a spring member.
16. The combination of a housing and a toggle joint provided with a pair of levers having one common articulation and independent bearings at their outer ends, one of which is attached to the ground box, the other one oi said bearings being fulcrumed to the free end of a spring member which is held substantially rigid at the other end by the housing.
17. The combination of a housing and a toggle joint provided with a pair of levers having one common articulation at their inner ends and independent bearin gs at their outer ends, one of which is attached to the ground box, the other one of said bearings being fulcrumed to the free end of a spring member which is held substantially rigid at the other end of the housing.
18. The combination of an electrical switch throwing device and a toggle joint provided with a pair of levers connected to the switch and having bearings at their ends and one common articulation at their inner ends. and independent bearings, one of which is attached to the ground box, the other one of said bearings being fulcrumed to the tree end of a spring member which is held substantially rigid at the other end by the ground box.
19. The combination of airelectrical switch throwing device and a toggle joint provided with a pair of levers connected to the switch and having bearings at their ends and one common articulation at their inner ends, and independent bearings at their outer ends, one of which is attached to the ground box,
the other one of said bearings being fulcrumed to the free end of a spring member which is held substantially rigid at the other end by the ground box.
20. The combination of an electrical switch throwing device including a solenoid with its armature and a toggle joint provided with a pair of levers, each connected to the switch and having bearings at their ends and one common articulation carried by said armature.
21. The combination of an electrical switch throwing device including a solenoid with its armature and a toggle oint provided with a pair of levers each connected to the switch and having bearings at their ends and one common articulation carried by said armature, at their inner ends.
22. The combination of an electrical switch throwing device and a toggle joint provided with a pair of levers connected to the switch and having bearings at their ends and one common articulation, each of the other ends being fulcrumed to the tree ends of spring members which are substantially rigid at their other ends.
23. The combination of an electrical switch throwing device and a toggle joint provided with a pair of levers connected to the switch and having bearings at their ends and one common articulation at their inner ends, each of the other ends being i'ulcrumed to the tree ends of the spring members which are substantially rigid at their other ends.
24-. The combination of an electrical switch throwing device including a solenoid with its armature and a toggle joint provided with a pair o't levers connected to the switch and having bearings at their ends and one common articulation carried by said armature, each of the other ends being t'ulcrumed to the free ends of spring members which are substantially rigid at their other ends.
25. The combination of an electrical switch throwing device. including a solenoid with its armature and a toggle joint provided with a pair of levers connected to the switch and having bearings at their ends and one common articulation carried by said armature at their inner ends, each of the other ends being fulcrumed to the free ends of spring members which are substantially rigid at their other ends.
it The combination of a housing, switch point and a toggle joint provided with a pair of levers having a common articulation at their inner ends and carried by an extension from said switch point and independent bearings. one of said bearings being fulcrumed to the free end of a spring member which is held substantially rigid at the other end by the housing.
27. The combinatoin of a housing, switch point and a toggle joint provided with a pair of lovers having a common articulation at their inner ends and carried by an extension from said switch point and independent bearings at their outer ends, one of said bearings being fulcrumed to the free end of a spring member which is held substantially rigid at the other end by the housing.
28. The combination of a magnet comprising a solenoid, housing and plunger and a toggle joint provided with a pair of levers having a common articulation and independent bearings at their outer ends which are tulcrumcd to the free ends of spring members which are held at the other end by said magnet.
29. The combination of a magnet comprising a solenoid, frame and armature and a toggle joint provided with a pair of levers having a common articulation with said plunger and independent bearings at their outer ends which are tulcrumed to the tree ends of spring members which are held at the other end by said magnet.
30. The combination of a. magnet comprising a solenoid. housing and plunger and a toggle joint provided with a pairot levers having a common articulation and independent bearings at their outer ends which are tulcrumed to the free ends of spring members which are held substantially rigid at the other end by said magnet.
31. The combination of a magnet comprising a solenoid. housing and plunger and a toggle joint provided with a pair ot levers having a common articulation with said plunger and independent bearings at their outer ends which are tulcrumed to the t'rcc ends of spring members which are held substantially rigid at the other end bv said magnet. l
32. The combination with an electromagnet having a magnetic housing and an ar-- mature and a spring controlled toggle joint mounted on said housing. said toggle joint being connected to said armature and operable by said electromagnet.
33. The combinatioir with an electromag net having a magnetic housing. disposed in the path to the magnetism of said electromagnet and an armature and a spring controlled toggle joint mounted on said housing. said toggle joint being operable by said elcirtromagnet.
3-4. The con'ibination with an electromagnet having a magnetic housing and an armature and a spring controlled toggle joint mounted on said housing. said toggle joint being connected to said armature. 7
35. The combination with an electromagnet having a magnetic housing. disposed in the path to the magnetism of said electromagnet and an armature and a spring controlled toggle joint mounted on said housing.
In testimony whereof I affix my signature.
JOHN L. MILTON.
til)
US182879A 1927-04-11 1927-04-11 Switch-throwing device Expired - Lifetime US1685172A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3224702A (en) * 1962-12-19 1965-12-21 Fmc Corp Web winding apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3224702A (en) * 1962-12-19 1965-12-21 Fmc Corp Web winding apparatus

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