US1254880A

US1254880A - Electric vibrator.

Info

Publication number: US1254880A
Application number: US12733316A
Authority: US
Inventors: William C Brinton Jr
Original assignee: Philips Brinton Co
Current assignee: Philips Brinton Co
Priority date: 1916-10-24
Filing date: 1916-10-24
Publication date: 1918-01-29
Anticipated expiration: 1935-01-29

Description

W.'C. BRINTUN, in!

ELECTRIC VHHMTUR. I APPLICAHIJH men DiTEI 24. mm

1 ,251,88()u Patented Jan. 29, 1918.

.UNIIED STATES T OFFICE.

WILLIAM C. BRINTON, JR., OF KENNETT SQUARE, PENNSYLVANIA, ASSIGNOR T PHILIPS-BEINTON COMPANY, OF KENNETT SQUARE, PENNSYLVANIA, A CORPO- RATION OF PENNSYLVANIA.

ELnc'r'aIo VIBRATOR.

1 254 880 Specification. of. Letters Patent. Patented Jan, 29, 191B,

* Application filed October 21, 1916. Serial No. 127,333, "To all whom it may concern: Will affect i only inappreciably, thereby Be it known that I, WILLIAM Bnls'rou, dispensing with the necessity of ad usting J12, a citizen of the United States, residing at the contact pin to compensate .for wear. Kennett Square, county of Chester, and. This object has been achieved wlthout pro- St'ate oflennsylvania, haveinvented a new riding new parts, but by reconstructing the and useful Improvement in Electric Vibraold parts and giving them, Within clearly tors, of which the following is a full, clear, worked out hunts, certaln shapes and ab and exact description, reference being had solute and relative proportions winch will to the, accompanying drawings, which form be more fully understood by, reference to a part of this specification. the accompanying draw ngs, in Wh1ch I As is well known, in an ordinary vibrator, Figure 1 1s a plan view of the vibrating composed of a fixed contact pin, an electroarmature, with the core of the magnet 1n magnet comprising a core and winding, and dotted hues. Fig. 2 is an. elevation 'of the an armature vi'bratable between the core complete vibrator. Fig. 3 is a section on and the contact pin, it is essential that the the line 3-3-of Fig. 2. distance traversed by the armature should The U-shaped member In: is secured to an be substantially fixed, otherwise the curinsulated base One upright arm 0 of rent consumption will vary within wide said member forms the core of the magnet. limits. The contact pin is, therefore, iui- (Z is the Winding for the core. To the/outtially adjusted so that its contact surface will turned end of the other arn'i Z; of said membe a fixed distance from the contact face of her is secured the armature, In the bracket j the core. Itis also well known that the m is screw-threaded a contact pin 76 ar-"' contact surfaces are subjected to 'considerranged opposite a-contact pin i secured to able Wear, thereby gradually increasin the the free end of the armature. The armature distance between contact surfaces and incomprises a thin metal plate 6 secured to creasing the range of movement of the 'armathe arm It by being clamped, by means of a 80 turc. ,This results inn-pronounced variation screw 7, between the arm 6 and a transin current consumption. To compensate for rersely extending channelshaped strip it; this and restore the initial conditions, the and two thin metal plates f arranged on op contact pin is made adjustable. posite sides of the plate 6 and secured there- By more or less frequent adjustments of to by means of rivets the contact pin, the desired current con- The core of the magnet has the following suniption may be in a measure restored to essential characteristic: it is of approxinormal; but it is obvious that=with many matcly a pronouncedly oblong shape in forms otniachincs in which vibrators are cross-section, Width being several-times employed, the operator is not aware of the greatcr than its thickness. the preferred ranecessity of adjusting the'contact pin on tio being about t to 1. By so shaping the carelessly falls to do so, with the result that core, it. is possible to supersaturatc the magthe variation in current consumption benet. which is of importance. comes serious, resulting in a greatly de- The plate 6 of the armature is very thin, creased etficiency in the operation of the but isof spring metal" so that its inherent machine of which the vibrator is a governelasticity maintains'ithe armature normally ing part. in mechanical and electrical connection with Even Where with careful supervision the the contact 70. Theemp'loyment of an incontact member is frequently adjusted, the elastic armature operated by a separate I differential Wear to Which the fixed contact spring should-be avoided. Theplates f of and the movable contact are subjected afthe armature pre frrably overlap the side fccts the alinement of the two contacts so edges of the plate e, but in any cventthe as to make impossible a restoration of the width of the armature should not be less on nal conditions. I than approximately the width of the core of he ob ect of my Invention is to provide the magnet. The provision of a relatively 1.05

I will not a a vibrator wherein a substantial variation 1n the ran e of movement of the armature ect the current consumption or wide core and a. correspondingly wine armature Is an essential feature of the inventlon. Another Important feature of the armature is that it should he of relatively short length. It has been found that if the length of the ernmtnre (memmrinp from the axis of screw g to lhe center of the pin 9') substantially exceeds twice the width oi the armature, the desired results are not secured. The )rcllerrcd ratio of lenglh to width is about to 5.

It has been found that by adjusting the contact. pin so as to vary the space traw creed by the contact pin oi the armature approximately from a minimum of .015 of an inch to a maximum of .llfiU of an inch, there is no appreciable variation in the current consumption or the variations is so slight as to be negligible.

The substantial uniformity of current consumption with a range of movement of the armature exceeding that produced by ordinary wear after long usage achieves the new result of dispensing with the necessity of adjusting the lined contact and, therefore, accomplishes a result which is new in kind and not merely an improvement in degree.

While a condenser is employed, in the well known way, in connection with the vibrator, the same forms no part of m invention and is, therefore, not illustrate Having now what I claim and desireto protect by Lettors Patent is:- v

1. In a vibrator, the combination with a magnet the width of the core of which is several times its thickness, of an inherently elastic vibrate-hie armature plate in proximity to one end of the core and whose lcn hwise extension is transverse to the width of the core, a contact member er ricd by the armature plate, and a second contact member against which the first'contact member is held by the inherent resiliencyof the armature plate when the magnet. is denerg ized, the width of the armature plate being not less than approximetel the width of thecore.

2. I1 a vibratonthe combination with a magnet the width of the core of which is fully described my invention,

several times its thickness,

several limes its thickness, of a. support electri ally connected with the core, an ninuttnre composed of an inl'ierently elastic lat plat-c extending in proximity to one end of the core, means confining one co l of the plele flat against its support, it contact memher carried by the plate, and a secondmentact member against which the first con tact n'ien'iber is held. by the inherent resili' ency of the arnmture plate when the mag net is decnergizcd, the width of the armature plate being not less than approximately the width of the core. I

3. In a vibrator, the con'ibination with a magnet the width of the core of which is several times its thickness, of an inherently elastic vihratal'ile ari'natnre ity lo one end of the core and whose lengthwise extension is transverse to the width of the core, a contact member carried by the armature plate, and a second contact 'menn her against which the first contact men'iber is held by the inherent resiliency oi the armature plate when the magnet is deencr gized, the width of the armature plate be ing not less than approximately the width of the core and the length of the irmetnre plate between its fixed support and its contact member not substantially exceeding twice its'width.

4. Inn vibrator, the combination with a magnet the width of. the core ofwhich is of an a l'mature support electrically connectedwith the core, a thininherently elastic flat 'strip secured flat agaipst its support, flat thin strips secured ,to opposite sides of the first strip beyond the latters support, the armature thus formed extending in proximity to the core of the magnet, and two contacts one of which is carried by the armature and is held against the other contact by the inherent resiliency of the inner strip when the magnet is deenergized In testimony of which invention, I have hereunto set my hand, at Philadelphia, Penna., on'this 13th day of October, 1916. WILLIAM C. BRINTON, JR.

plate in proxim v