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Class Information
Number: 238
Name: Railways: surface track >
Description: This class includes patents relating to surface railway-tracks which in their make-up include road-bed structure, rail-supporting elements--such as stringers, ties, rail-chairs, and tie-plates--rails, rail-joints, rail-bonds, track and rail-joint fastenings, and electric insulation as applied to ties, rails, rail-joints, rail-bonds, and track-fastenings.

Class Number	Class Name	No. of Patents
238/382	Deadening noise	70
238/14.05	Electrical connections	7
238/14.4	Combined rail joint or support	5
238/14.5	Interposed conductor	0
238/14.6	Rail web contacting	1
238/14.7	With intermediate bond-wire support	0
238/14.8	Dowel pin or inserted key type	1
238/14.2	From rail to noncontiguous rail or other object	3
238/14.1	Plural or laminated bond	2
238/14.11	On both sides of rails	0
238/14.9	Protected bond	0
238/14.12	Rail bond forms	1
238/14.14	Rail-base or flange attached	9
238/14.15	Molded joint	1
238/14.13	Rail-head attached	2
238/14.3	Special rail	4
238/310	Fastenings	81
238/335	Abutting screw point	0
238/377	Bolt anchors and sleeves	14
238/338	Clamps	66
238/343	Anchors	5
238/346	Ratchet	1
238/344	Vertical face	3
238/345	Vertical shank	4
238/347	Bevel guide	8
238/341	Cam adjustment	10
238/351	Clip type	73
238/352	Double	6
238/354	Horizontal wedge	5
238/353	Vertical wedge	2
238/339	Gauge	2
238/355	Hooks	10
238/356	Pivoted	2
238/357	Twin	3
238/359	Single pivot	0
238/358	Through bolt	1
238/350	Integral with tie	6
238/348	Internal arm	2
238/360	Lever	3
238/340	Multiple face	5
238/342	Nut type	5
238/349	Spring	142
238/361	Wedges	4
238/363	Aligned	0
238/364	Flange	1
238/365	Locks	3
238/362	Parallel	4
238/312	Protective boxes and closures	0
238/315	Rail anchors	19
238/317	Cam	4
238/320	Distorted rail	0
238/316	Pawl	0
238/319	Rail lug	2
238/318	Rail recess	1
238/321	Tie contact	3
238/325	Bevel slide	0
238/326	Reversed lap	0
238/322	Cam	1
238/329	Diagonal	0
238/330	Integral	0
238/323	Swinging clip	1
238/327R	Twin jaws	3
238/327A	Two-part, with lock	0
238/328	With wedge	0
238/324	Wedge	1
238/336	Rail brace	19
238/337	Vertical slide	1
238/366	Spikes	12
238/368	Bent	0
238/367	Interlock	1
238/375	Lock	6
238/370	Plug	7
238/376	Ratchet	0
238/372	Screw	7
238/373	Sockets	3
238/374	Socket and wedge	2
238/371	Socket	6
238/369	Split end	1
238/331	Transverse slide	14
238/333	Horizontal wedge-operated	2
238/332	Screw-operated	2
238/334	Vertical wedge-operated	3
238/378	U-bolts and clips	7
238/313	Universal	0
238/311	Welded	3
238/314	Yoke	1
238/379	Foot guards	4
238/380	Switch point	1
238/381	Wheel-depressed	5
238/17	Guardrails	17
238/22	Spacers	4
238/23	Tapered	2
238/18	Spring	0
238/20	Two-rail chair	6
238/21	Two-rail clamps	3
238/19	Under main rail	1
238/1	Miscellaneous	25
238/109	Pedestals	9
238/115	Concrete block	13
238/117	Bar core	11
238/116	Chair bar	0
238/119	Pier	1
238/110	Pot	4
238/111	Cast	1
238/120	Screw	0
238/114	Tube or box	2
238/118	Wood block	0
238/112	Wrought plate	0
238/113	Inverted "u"	0
238/10R	Portable track	116
238/10C	Continuous roadbeds	10
238/12	Crossovers	2
238/11	Embankment or fill	1
238/13	House moving	5
238/10B	Simulated roadbeds	19
238/10E	Toy track, rail-guided	90
238/10F	Toy track, slot-guided	79
238/10A	Toy truck systems	35
238/14	Traction mats	76
238/121	Rail arrangement	7
238/151	Rail joints	16
238/209	Base plate	0
238/212	Angle-bar overlap	0
238/211	Angle-bar underlap	0
238/213	Base stiffeners	1
238/215	Center seat	0
238/214	Distorted	0
238/216	Rail lock	0
238/217	Side clips	3
238/210	Top flange	2
238/162	Cast on	2
238/187	Chair	4
238/195	Angle	0
238/196	Pivoted	1
238/198	Sliding splice lock	0
238/199	Base plate underlap	0
238/197	Splice lug engagement	1
238/201	Transverse slide	1
238/203	Horizontal wedge	1
238/202	Screw-operated	0
238/204	Vertical wedge	1
238/200	Weber type	0
238/205	Integral	3
238/206	Base filler	1
238/207	One-side filler	0
238/208	Two-side filler	0
238/188	Twin	1
238/189	Base stiffener	0
238/191	Base-bolted	0
238/193	Interlocked base sections	0
238/194	Longitudinal keys	0
238/192	Lapping base sections	0
238/190	With base plate	0
238/167	Compromise	5
238/171	Expansion deflectors	7
238/180	Flush web key	0
238/170	Gravity	1
238/152	Insulated	14
238/154	Chair	3
238/157	Angle	0
238/158	Weber type	0
238/155	Twin	0
238/156	Base plate or bolted	0
238/159	Splice bars	9
238/161	In channel	2
238/160	With base plate	4
238/153	Transverse abutting	6
238/183	Integral web key and bars	1
238/179	Internal key	2
238/182	Joint lug key	0
238/161.5	Lubricant- or liquid-containing	2
238/163	Molten filler	1
238/169	Parallel beams	1
238/166	Pivoted	3
238/230	Scarf	6
238/240	Angularly assembled	0
238/242	Lateral	1
238/241	Longitudinal	1
238/236	Laterally assembled	1
238/238	Longitudinal lock	0
238/239	Twin	3
238/237	Twin	0
238/234	Longitudinal or vertical	0
238/231	Longitudinally assembled	5
238/232	Twin	4
238/233	With vertical drop	0
238/235	Vertical drop	2
238/175	Special rails	5
238/176	Channels	0
238/178	Flat	0
238/177	T-web u-base	1
238/243	Splice bars	14
238/263	Adjustable joint clamps	3
238/251	Bar bolts and splice keys	1
238/250	Bar lugs and splice keys	0
238/253	Bolt keys	1
238/255	Cam-tightened	2
238/260	Fasteners	0
238/261	Double and split keys	0
238/249	Longitudinal bolts	5
238/244	Multiple part	2
238/262	Nut and bolt lock	2
238/246	Rail guide	1
238/247	Attached	0
238/248	Rail sleeve	1
238/254	Rail-groove swing	0
238/252	Slotted bolt locks	1
238/259	Springs	0
238/258	Tapered	0
238/245	Toggle	0
238/256	U-bars and loops	1
238/257	Vertical bevel flange	0
238/165	Switch rail	3
238/218	Tread bridge	5
238/223	Head section	0
238/224	Saddle	0
238/221	Notched head	0
238/222	Twin	0
238/225	Rail section	5
238/226	Splice key	2
238/220	Rail-head cover	1
238/219	Rail-head insert	2
238/227	Spacer	1
238/228	Expansible	2
238/229	Web posts	0
238/168	Truss rod	0
238/174	Variable levels	4
238/172	Vertical adjustment	2
238/181	Web key splice lock	0
238/184	Web locks	0
238/164	Welded	10
238/173	Yielding rail end	1
238/185	Z-form	0
238/186	Base-connected	0
238/264	Rail seats	44
238/269	Cast	0
238/271	Plane top	1
238/270	With tie	7
238/283	Cushions	96
238/284	Metal springs	4
238/285	Wood blocks	0
238/266	English chair	0
238/279	Gravity	0
238/268	Inverted channel rail	1
238/278	Jaw and seat	1
238/282	Lateral adjustment	20
238/277	Pivoted	1
238/280	Saddles	2
238/286	Spiking blocks	1
238/267	T-rail	3
238/275	Twin jaws	0
238/276	Wrought	0
238/281	Vertical adjustment	14
238/265	With anchor in concrete	25
238/272	Wrought	1
238/274	Plane top	0
238/273	With tie	0
238/122	Rails	32
238/138	Base bar	2
238/137	Biped	1
238/127	Channel	2
238/128	Integral	1
238/140	Detachable guard or step	1
238/143	Detachable head	9
238/145	Grooved web	0
238/146	Integral grooved base	1
238/144	Lap web	1
238/147	Web clamp	1
238/123	Rack	7
238/132	Reversible	0
238/133	Triple head	0
238/139	Side bars	0
238/141	Split base and web	3
238/142	Split tread	2
238/136	Step tread	3
238/150	Substance	11
238/130	T-rail	4
238/148	Tread surfaces	15
238/129	Trough and filler	1
238/134	Tubular	7
238/135	Integral	3
238/124	Turnout	2
238/125	Vignoles	7
238/126	T-base insert	1
238/131	Webless or flat	0
238/149	Webs	2
238/2	Roadbed	82
238/6	Continuous	11
238/7	Concrete	32
238/3	Highway track	8
238/5	Concrete	8
238/4	Metallic	2
238/9	Rail paving	15
238/8	Street crossing	95
238/24	Stringers	2
238/25	Concrete	10
238/26	Metallic	3
238/27	Tie arrangement	11
238/28	Diagonal	0
238/287	Tie-plates	35
238/297	Anchors	6
238/298	Integral	9
238/307	Contour	9
238/288	Gauge	6
238/290	Lap	0
238/291	Interlock	3
238/289	Plural tie	1
238/292	Rail brace	12
238/293	Integral	1
238/306	Rail-base seats	13
238/301	Reversible	0
238/302	Spring	1
238/305	Rotary	2
238/303	Screw spike	7
238/300	Sleeve	2
238/294	Spike lock	3
238/295	Lug on spike	4
238/296	Pawl	0
238/308	Spike-hole arrangement	2
238/309	Spike-shank brace	0
238/299	Tie butting	4
238/304	Top surface	18
238/29	Ties	19
238/106	Anchor lugs and ribs	8
238/82	Corrugated	2
238/54	Cross section	5
238/59	Channel flange down	6
238/61	Rolled	1
238/60	Sheet metal	3
238/62	Channel flange up	7
238/64	Rolled	0
238/63	Sheet metal	1
238/65	I-beam	1
238/66	Rolled	0
238/67	T-shape	2
238/68	Cast	2
238/69	Inverted	2
238/70	Tubular	3
238/81	Circular	1
238/71	Multiple	0
238/72	Rectangular	1
238/77	Folded sheet	0
238/78	Integral	0
238/79	Cast	0
238/75	Separate bottom	0
238/74	Separate lid and bottom	0
238/76	Separate lid	0
238/73	Vertical telescope	0
238/80	Triangular	0
238/55	Two-part	2
238/58	Angles or t's	2
238/56	Channels	1
238/57	I-beam	1
238/104	End closures	1
238/30	Forms	7
238/39	Complementary sliding lock	1
238/34	Detachable ends	1
238/37	Horizontal sandwich	8
238/31	Jointed	1
238/32	Hinged	2
238/33	Pivoted ends	2
238/43	Loop or hook ends	0
238/35	Multiple section	5
238/45	Special	2
238/47	Bridge joint	1
238/49	Old rail	0
238/46	Rail joint	0
238/48	Spring	1
238/44	Spread ends	2
238/42	Stringer ends	0
238/40	Truss	0
238/41	Integral	0
238/38	Twin	3
238/36	Vertical sandwich	5
238/107	Insulation	10
238/108	Sectional tie	2
238/83	Nonmetallic	21
238/84	Plastic compound	35
238/95	Armored	1
238/103	Bottom	0
238/96	Box	0
238/98	Side and bottom	3
238/99	Side and top	0
238/100	Sides	1
238/102	Top and bottom	0
238/101	Top	1
238/97	Tube	0
238/85	Internal reinforcements	21
238/88	Cast	2
238/90	Closed loop	1
238/93	Foraminous sheet	0
238/91	Rods	13
238/92	Crosstied	2
238/89	Rolled section	4
238/86	Truss	2
238/87	Tube	1
238/94	Wire	5
238/50	Rods	4
238/51	Rail-base	1
238/53	Screw rod	3
238/52	Turnbuckle	1
238/105	Spacers	2
238/15	Track curves	8
238/16	Rollers	2
238/DIG.1	Track structure assembled by gluing	5