Combination guide and rotary bearing for freely moving shaf

Dow, N. F.

Peters, R. W.

English

NASA Technical Reports Server

REPLY TO 
ATTNOF G P  
NATIONAL AERONAUTICS AND SPACE ADMINISTRATION 
WASHINGTON, D.C. 20546 
June  30, 1971 
MEMORANDUM 
,oTO : KSI/Scientific & Technical Information Division ~~ 
A t t n :  M i s s  Winnie M. Morgan 
FROM: GP/Of f ice of A s s i s t a n t  General 
Counsel f o r  Patent Matters 
SUBJECT: Announcement of NASA-Owned 
U . S .  Pa ten t s  i n  STAR 
I n  accordance with the  procedures contained i n  t h e  Code GP 
t o  Code US1 memorandum on t h i s  subject ,  dated June 8, 1970, 
t he  attached NASA-owned U . S .  patent is being forwarded f o r  
abs t rac t ing  and announcement i n  NASA STAR. 
The following information is  provided: 
U . S .  Patent  No.  : 2,903,307 
Corporate Source . Langley Research C e n t e r  
Supplementary 
Corporate Source 
NASA Patent C a s e  NO. : ~t~4-00013 
Enclosure : 
Copy of Patent r r Y  
c___ 
(CATEGORY) 
https://ntrs.nasa.gov/search.jsp?R=19710019660 2020-03-17T03:10:12+00:00Z
Fip. I 
Sept. 8, 1959 R. W. PETERS E T A L  2,903,307 
m0 COMPONENT BEARING 
Filed April 18, 1956 4 Sheets-SReet 2 
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INVENTORS 
ROGER w! PErzRs 
NORRfS E DOW 
Sept. 8, 1959 R. W. PETERS E T A L  2,903,307 
Filed April 18, 1956 4 Sheets-Sheet 3 
TWO COMPONENT BEARING 
Fig. 6 
BY 
EYS 
Sept. 8, 1959 R. W. PETERS E T A L  
TWO COMPONENT BEARING 
Filed April 18, 1956 
2,903,3O 7 
4 Sheets-Sheet 4 
88 90 P 
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Fig .  9 
Fig. 8 
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INVENTORS 
RQG€R n! P€T€RS 
NQRRiS E DQW 
BY 
2,903,307 United States Patent Office Patented Sept. 8, 1959 
2 
lations. A shaft 22 is carried by the ball bearings 20 and 
may reciprocate axially with a minimum of friction. 
In Fig. 3 there is shown another construction of the 
1 
2,903,307 
TWO COMPONENT BEARING 
Roger W. Peters, Warwick, Va., ana No& F. DOW, 
Menectady, N.Y., asslgnom to the United S t a h  of 
America 88 represented bY the. W e b V  Of the Navy 
bearingwhich permits the translation of the shaft. In 
6 this embodiment, a spider consisting of a plurality of 
arcuate segments 24 is fixedly positioned within inner 
race 12. Each segment 24 has a radially inwardly ex- 
tending slot 25 formed therein wherein a shaft 26 is 
AppUcafion April as, 1956, Serial No. 579,121 
1 Claim. (Cl. 308-177) 
positioned and carried by bores 27 formed in the segment 
10 on both side walls of the slot. A relatively small sized 
bearing 28 is mounted on the shaft 26 of each of the 
(Grantea mder ntle 35, us, Code (1952), 8ec. 266) segments for supporting the reciprocating shaft 22 ex- tending through the center aperture defined by the spider 
assembly. A sufficient number of sements of the urouer 
The invention described herein may be manufactured 
and used by or for the Government of the United States 
of America for governmental purposes without the pay- 
ment of any royalities thereon or therefor. 
The present invention relates to a two component bear- 
ing and more particularly to a bearing which will permit 
a shaft held therein to both translate and rotate with a 
minimum of friction. The bearing of the present inven- 
tion possesses characteristics which enable it to be used 
where only extremely fine. tolerances are permitted, such 
as in stress-strain testing machines. 
An object of the present invention is the provision of 
a bearing which will permit a shaft to translate freely 
therein and also permit rotation of the shaft. 
Another object is to provide a bearing which may be 
made from a number of standard components. 
A further object of the invention is the provision of a 
bearing comprising a guide bearing for a shaft and a 
rotary bearing carrying the guide bearing. 
A final object is to provide a two component bearing 
in which the inner race of one bearing has a spider inte- 
gral therewith for carrying a plurality of bearings. 
Other objects and many of the attendant advantages 
of this invention will be readily appreciated as the same 
becomes better understood by reference to the following 
detailed description when considered in connection with 
the accompanying drawings wherein: 
Fig. 1 is a cross-sectional view of one form of the 
bearing of the present invention, 
Fig. 2 is a cross-sectional view taken on the line 2-2 
of Fig. 1, 
Fig. 3 is a partial cross-sectional view of a second form 
of the invention, 
Fig. 4 is an exploded cross-sectional view taken on the 
line 4-4 of Fig. 3, 
Fig. 5 is a partial cross-sectional view of yet another 
form of the invention, 
Fig. 6 is a partial cross-sectional view taken on the 
line 6-6 of Fig. 5. 
Fig. 7 is a cross-sectional view taken on line 7-7 of 
Fig. 5, 
Fig. 8 is a view, partly in cross-section, of a final em- 
bodiment of the invention, 
Fig. 9 is a cross-sectional view taken on the line 9-9 
of Fig. 8, and 
Fig. 10 is a cross-sectional view taken on the line 
14-10 of Fig. 8. 
Referring now to the drawings, wherein like reference 
characters designate like or corresponding parts through- 
out the several views, there is shown in Fig. 1 an outer 
race 10 and an inner race 12 having between them a 
plurality of balls 14. The inner race 12 has extending 
inwardly therefrom a plurality of integral ears 16 spaced 
in paired relation as shown. Between each pair of ears 
16 extends a shaft 18 which carries thereon a ball bear- 
ing 20. Preferably, there are six such ball bearings 20, 
although the number may be varied for different instal- 
16 size are- used so that complete support of the &aft-22 
is provided, as is apparent from Fig. 3. In Fig. 4 there 
is shown a manner in which the segments 24 are held in 
a spider assembly. On each side of the segments 24 there 
is placed a washer 29. Washers 29 are positioned on the 
20 segments 24 by means of pins 32 passing through holes 
34 in the washer and into a corresponding hole 36 in the 
segment 24. A screw 38 is shown which will pass through 
a hole 40 in washer 29 and be secured in a tapped hole 
42 in segment 24. 
In Fig. 5 there is shown yet another form of 'the in- 
vention, there being shown therein a bearing having an 
outer race 50, an inner race 52 and a plurality of balls 
54 therebetween. Within the inner race 52 there is 
carried a spider 56 made from two identical semi-circular 
30 parts. The spider 56 has a plurality of slots 58 therein 
for receiving a ball bearing 60. The inner race of the 
ball bearing 60 is mounted upon a bearing insert 62 
which has a square hole in the center. Through this 
square hole there passes a split ring 64 of square shaped 
36 cross-section. Split ring 64 is conveniently made in two 
halves, each of semi-circular shape. To prevent the 
movement of the ball bearings 60 and the split ring 64 in 
relation to the spider 56, split ring 64 is positioned in 
a groove 66 in the interior face of the spider 56, as is 
In the form of the invention shown in Fig. 8, there is 
shown a ball bearing having an outer race 80 and an 
inner race 82 having between them a plurality of balls 
84. Inner race 82 is of substantial radial extent, and 
45 has therein a plurality of slots 86 in each of which there 
is a ball bearing 88, which support a shaft 90 for axial 
movement. The ball bearings 88 are carried on a ring 
member 92 (see Figs. 9 and 10): the ring member 92 
extends through spacers 94 which are interspersed be- 
60 tween the bearings 88 and which rest in small, conform- 
ing cut-outs 96 in the inner race, as shown in Fig. 10. 
Preferably, several individual bearings are placed in axial 
relation relative to the shaft 90, three being shown by 
way of example in Figs. 9 and 10. This embodiment of 
66 the invention is similar to Fig. 1 in that the inner race 
integrally carries the ball bearings permitting axial move- 
ment. Also, this embodiment is similar to that of Fig. 5 
in that a large annular segment is slotted at intervals to 
receive ball bearings. Of course, any number of segments 
By means of any of the abave-described constructions, 
a shaft carried by the inner ball bearings may move axial- 
ly of itself with a minimum of frictional resistance. Also, 
rotation of the shaft may be affected with minimum re- 
65 sistance due to the ability of the outer ring of ball bear- 
ings to rotate freely, the outer race being fixed to a sup- 
port in known manner. 
Obviously many modifications and variations of the 
present invention are possible in the light of the above 
70 teachings. It is therefore to be understood that, within 
the scope of the appended claim, the invention may be 
25 
40 clearly shown in Fig. 7. 
60 may be used, two or three being preferred. 
2.903,807 
3 
practiced otherwise than as specifically described. 
We claim: 
A bearing for permitting both rotary and axial move- 
ment of a shaft comprising an outer radial ball bearing, 
a spider assembly fixedly positioned within the inner race 
of said outer ball hcaring and defining a central aperture 
whcrein the shaft is disposed, said spider assembly being 
formed of a plurality of arcuate shaped segments, a radial- 
ly inwardly extending slot formed in each of said seg- 
ments. a pin journalled in said slot of each of said seg- 
ments, an inner radial ball bearing mounted on said pin 
of each of said segments, the axis of each inner ball 
bearing lying in a plane perpendicular to the longitudinal 
axis of said outer ball bearing, and the outer race of each 
inner ball bearing extending into said central aperture for 
4 
supporting the shaft disposed therethrough, and a cen- 
trally apertured cover plate secured to each of two op- 
posite faces of each of said segments for maintaining said 
segments in said spider assembly. 
References Cited in the file of this patent 
UNITED STATES PATENTS 
6 
867,511 Karns ______-__________ Oct. 1, 1907 
1,123,851 Cooper ______________-_ Jan. 5, 1915 
lo 1,880,361 Schroeder _ _ _ _ _ _ _ _ _ _ _ _ _ _  Oct. 4, 1932 
2,337,854 Price --______-_______-- Dec. 28, 1943 
2,493,856 Ruhler _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _  Jan. 10, 1950 
FOREIGN PATENTS 
16 283,855 Switzerland _ _ _ _ _ _ _ _ _ _ _ _  Oct. 16, 1952 


Two component bearing Patent

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